Tab select

[Gösta H. Lovgren-2]

Thanks Dave. It makes sense now (and works). Your explanation, and especially code snippet is appreciated. I had read the PB Help but it just didn't stick for some reason. (Well there is a reason, but no need to go into inherent brain deficiencies on this thread. {sigh})

========================================================
It seems to me, Golan, that the advance of civilization
is nothing but an exercise in the limiting of privacy.
Isaac Asimov, Foundation's Edge (1920- 1992)
========================================================

[Dave Biggs]

Gösta,
Try this..

    Control Add Option,   hDlg01, %IDC_NOISE2, "Nachts ruhig", col, row, 110, 12, Group_Start_Style
    Row = Row + 20
    Control Add Option,   hDlg01, %IDC_NOISE3, "Überwiegend ruhig", col, row, 110, 12
    Row = Row + 20
    Control Add Option,   hDlg01, %IDC_NOISE4, "Button 4",  col, row, 110, 12
    Row = Row + 20
    Control Add Option,   hDlg01, %IDC_NOISE5, "Button 5", col, row , 110, 12
 
    ' Add a Tab control DDT way...
    Control Add Tab,      hDlg01,  %IDC_CP_OPTIONS, "Add Tab", 50, 100, 270, 117, Group_End_Style

SDK -> WS_GROUP:
Specifies the first control of a group of controls.
The group consists of this first control and all controls defined after it, up to the next control with the WS_GROUP style.
The first control in each group usually has the WS_TABSTOP style so that the user can move from group to group.
The user can subsequently change the keyboard focus from one control in the group to the next control in the group by using the direction keys.

PB Help -> Control Add Option:
In addition, the first OPTION control in a group should have the style %WS_GROUP (to mark the beginning of a group of buttons) and %WS_TABSTOP.
The remainder of the OPTION controls in the group should not have %WS_GROUP or %WS_TABSTOP styles.
However, the very next non-OPTION control to appear in the tab order after the group should be given the %WS_GROUP and %WS_TABSTOP styles (the latter may depend on the type of control it is).
If there are no other controls after the group, add %WS_GROUP to the first control in the dialog.
This ensures that keyboard navigation with the arrow keys will operate within the group of OPTION controls, and that the TAB and SHIFT+TAB keys will switch focus between whole groups of controls (instead of individual controls as is common when each group member has the %WS_TABSTOP style).

[Werner Bleckwendt]

Probably easier would be were WS_GROUP a 'default' style for the CONTROL ADD TAB statement; a "new feature suggestion" is probably in order for DDT users.

That's what I said.

The code now executes without a problem - exept when I change the order of the controls so the controls with %IDC_UNUSED are in front of the CONTROL ADD TAB statement. However, that is something I can live with.

[Gösta H. Lovgren-2]

%WS_GROUP is the answer..

I don't think so. It hangs with/without the style.

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
Function ShowCP(ByVal hParent As Dword) As Long
    Local lRslt, row, col, stile  As Long
    Local Group_Start_Style, Group_End_Style As Long
    Local hFont1 As Dword
    Dialog New hParent, "Camping Platz Info", 70, 70, 350, 300, %WS_POPUP Or _
        %WS_BORDER Or %WS_DLGFRAME Or %WS_SYSMENU Or %WS_CLIPSIBLINGS Or _
        %WS_VISIBLE Or %DS_MODALFRAME Or %DS_CENTER Or %DS_3DLOOK Or _
        %DS_NOFAILCREATE Or %DS_SETFONT, %WS_EX_CONTROLPARENT Or %WS_EX_LEFT _
        Or %WS_EX_LTRREADING Or %WS_EX_RIGHTSCROLLBAR, To hDlg01
    
    Group_Start_Style = %WS_GROUP 'Or %Ws_TabStop
    Group_End_Style = %WS_GROUP
    'stile = 
    Row = 20
    Col = 50
    Control Add Option,   hDlg01, %IDC_NOISE2, "Nachts ruhig", col, row, 110, 12, Group_Start_Style
    Row = Row + 20
    Control Add Option,   hDlg01, %IDC_NOISE3, "Überwiegend ruhig", col, row, 110, 12
    Row = Row + 20
    Control Add Option,   hDlg01, %IDC_NOISE4, "Button 4",  col, row, 110, 12
    Row = Row + 20
    Control Add Option,   hDlg01, %IDC_NOISE5, "Button 5", col, row , 110, 12, Group_End_Style

    ' Add a Tab control DDT way...
    Control Add Tab,      hDlg01,  %IDC_CP_OPTIONS, "Add Tab", 50, 100, 270, 117
    Tab Insert Page       hDlg01,  %IDC_CP_OPTIONS, 1, 0, "Infrastruktur" To  hTab1
'
    Control Add CheckBox, hTab1, %IDC_CP_MAINS,   "Strom", 2, 5, 105, 12
    Row = 20
    Col = 10
    Control Add TextBox, hTab1, %Id_TB_01, "Textbox", Col, Row, 120, 12   
    Row = Row + 20
    Control Add Option, hTab1, %Id_Button_02,   "Id Button 02", Col, Row, 105, 12, stile
    Row = Row + 20
    Control Add Option, hTab1, %Id_Button_02,   "Id Button 03", Col, Row, 105, 12, stile
    Tab Insert Page       hDlg01,  %IDC_CP_OPTIONS, 2, 0, "Sanitär"       To  hTab2
'    Control Add CheckBox, hTab2, %IDC_CP_MAINS,   "Strom", 2, 5, 105, 12
    Control Add Button, hDlg01, %IDC_BUTTON3, "&Close", 50, 250, 50, 15
    
    Dialog Show Modal hDlg01, Call ShowCPProc To lRslt
    Function = lRslt
End Function
'
' *******************************************************
'

The program hangs in the "Camping Platz Info" dialog every time, stile or no.

=====================================
"I choose a block of marble
and chop off whatever I don't need."
Francois-Auguste Rodin (1840-1917),
when asked how he managed
to make his remarkable statues
=====================================

[Rodney Hicks]

While I agree that having the tab stops and the grouping is good programming practice, not having them should not cause an app to hang. IMO

[Michael Mattias]

In post 33 a set of option controls is followed by a tab control, so WS_GROUP is required on the tab control to properly terminate the preceding group of option controls.

Of course you could change the order of the CONTROL ADD statements but that would affect the tab order, unless you changed it with SetWindowPos () or something. All in all, it's probably just easier to add WS_GROUP to your tab controls. Probably easier would be were WS_GROUP a 'default' style for the CONTROL ADD TAB statement; a "new feature suggestion" is probably in order for DDT users.

[Rodney Hicks]

Actually... in your example , the TAB control needs the WS_GROUP style to END the group of option controls, not for any purpose related to the tab control itself.

And from the SDK it says:

The style marks the beginning of a group of controls.

There is no other group of controls in the example in post 24 so this style seems redundant, however....

[Michael Mattias]

The CONTROL ADD TAB needs to have the %WS_GROUP, too. As this constant is not mentioned for the Tab control in the PB9 manual, I didn't even thought this could be the cause. Perhaps this should be implemented by PB as default style as it makes no sense to use a TAB control without grouping

Actually... in your example , the TAB control needs the WS_GROUP style to END the group of option controls, not for any purpose related to the tab control itself.

WS_GROUP is a style bit used by the "owner window/dialog," not by the control itself.

But I cannot imagine any circumstances in which it could hurt to add the WS_GROUP style to a tab control.

MCM

[Werner Bleckwendt]

%WS_GROUP is the answer..

    CONTROL ADD OPTION,   hDlg, %IDC_NOISE2, "Nachts ruhig", 50, 20, 110, 12, %WS_GROUP
    CONTROL ADD OPTION,   hDlg, %IDC_NOISE3, "Überwiegend ruhig", 50, 40, 110, 12
 
    ' Add a Tab control DDT way...
    CONTROL ADD TAB,      hDlg,  %IDC_CP_OPTIONS, "", 50, 100, 270, 117, %WS_GROUP

Marks the begining and end (first control after the group that is not a member) of the Option Button group.

Thanks Dave, this guided me in the right direction. The CONTROL ADD TAB needs to have the %WS_GROUP, too. As this constant is not mentioned for the Tab control in the PB9 manual, I didn't even thought this could be the cause. Perhaps this should be implemented by PB as default style as it makes no sense to use a TAB control without grouping.

Again thanks to all! What a helpful community!

rgds
Werner

[Dave Biggs]

%WS_GROUP is the answer..

    CONTROL ADD OPTION,   hDlg, %IDC_NOISE2, "Nachts ruhig", 50, 20, 110, 12, %WS_GROUP
    CONTROL ADD OPTION,   hDlg, %IDC_NOISE3, "Überwiegend ruhig", 50, 40, 110, 12
 
    ' Add a Tab control DDT way...
    CONTROL ADD TAB,      hDlg,  %IDC_CP_OPTIONS, "", 50, 100, 270, 117, %WS_GROUP

Marks the begining and end (first control after the group that is not a member) of the Option Button group.

[Werner Bleckwendt]

Theoretically one can use the CONTROL ADD CHECKBOX instead of CONTROL ADD OPTION together with the %WS_GROUP. If you change the code, the program does no longer hang, but the controls seem not be grouped ....

[Werner Bleckwendt]

Ok, I can't believe this!!!!
so simple...
overlooked...
stupid mistake...
replace brain...

Oh, don't forget the grouping of controls!!!!
OR %WS_GROUP OR %WS_TABSTOP

I am surprised nobody caught this one earlier....

In my code the first CONTROL ADD OPTION has the %WS_GROUP OR %WS_TABSTOP

CONTROL ADD OPTION, hDlg, %IDC_NOISE1, "Tag u. Nacht ruhig", 175, 132, _
110, 12, %WS_CHILD OR %WS_VISIBLE OR %WS_GROUP OR %WS_TABSTOP OR _
%BS_TEXT OR %BS_AUTORADIOBUTTON OR %BS_LEFT OR %BS_VCENTER, _
%WS_EX_LEFT OR %WS_EX_LTRREADING
CONTROL ADD OPTION, hDlg, %IDC_NOISE2, "Nachts ruhig", 175, 144, 110, _
12
CONTROL ADD OPTION, hDlg, %IDC_NOISE3, "Überwiegend ruhig", 175, 156, _
110, 12

and the snippet you created hangs in both cases, with or without %WS_GROUP

But the behaviour of the radio buttons is strange: Move through the dialog with the TAB key (%WS_GROUP has been added to your code):

1. second radio button is active
2. first tab is selected
3. checkbox is selcted
4. close button is selected
5. first radio button is selected
6. second radio button is selected

The standard behaviour (PB8 and PB7) if a radio button has the focus, you move with the cursor keys through the options.

[Rodney Hicks]

So Jules, can you make the code in post 24 run properly with the grouping and the tab stopping? Without adding any thing else? I don't mean this to challenge, I am very curious.

[Jules Marchildon]

Ok, I can't believe this!!!!
so simple...
overlooked...
stupid mistake...
replace brain...

Oh, don't forget the grouping of controls!!!!
OR %WS_GROUP OR %WS_TABSTOP

I am surprised nobody caught this one earlier....

[Jules Marchildon]

I can duplicate this weird problem using the DDT generated code from my QTAB designer.
I added a couple of radio controls to the main dialog instead of an additional popup.
I'm not ready to call it a possible bug just yet...
This one compiled with PBWIN804,
does not include new TAB features build into PBWIN901

'******************************************************************************
' PROJECT: Quick Tab Visual Designer DDT generated code.
' FILE:    Your file name
' CREATED: On 07-29-2009 at 22:37:59
'******************************************************************************

#COMPILE  EXE
#INCLUDE  "WIN32API.INC"
#INCLUDE  "COMMCTRL.INC"

'---Main Tab Identifiers
%IDTAB_MAIN      = 100
%IDTAB_PAGE_1    = 101
%IDTAB_PAGE_2    = 102
%IDC_OK          = 103
%IDC_CANCEL      = 104
%IDC_APPLY       = 105

'---Page 1 control identifiers
%IDC_GROUPBOX_2    = 1000
%IDC_RADIOBUTTON_1 = 1001
%IDC_RADIOBUTTON_2 = 1002
%IDC_RADIOBUTTON_3 = 1003
%IDC_RADIOBUTTON_4 = 1004
%IDC_RADIOBUTTON_5 = 1005

'---Page 2 control identifiers
%IDC_CHECKBOX_1    = 1006
%IDC_CHECKBOX_2    = 1007
%IDC_CHECKBOX_3    = 1008
%IDC_GROUPBOX_1    = 1009

'---Declares
DECLARE FUNCTION CreateMainDialog(BYVAL hParent AS LONG) AS LONG
DECLARE FUNCTION CreateMainTabControl(BYVAL hDlg AS LONG) AS LONG
DECLARE FUNCTION CreateDialogTabPage1(BYVAL hParent AS LONG) AS LONG
DECLARE FUNCTION CreateDialogTabPage2(BYVAL hParent AS LONG) AS LONG
DECLARE CALLBACK FUNCTION MainDialogProc()
DECLARE CALLBACK FUNCTION TabPageDlgProc1()
DECLARE CALLBACK FUNCTION TabPageDlgProc2()
DECLARE FUNCTION EnumCharSet(elf AS ENUMLOGFONT,ntm AS NEWTEXTMETRIC,BYVAL FontType AS LONG,CharSet AS LONG) AS LONG
DECLARE FUNCTION MakeFontEx(BYVAL sFont AS STRING, BYVAL PointSize AS LONG, BYVAL fBold AS LONG, _
    BYVAL fItalic AS LONG, BYVAL fUnderline AS LONG, BYVAL StrikeThru AS LONG) AS LONG
DECLARE SUB CreateMainDlgButtons(BYVAL hDlg AS LONG)
DECLARE SUB DeleteControlFont(BYVAL hDlg AS LONG)
DECLARE SUB SetCtlTooltip(BYVAL hCtl AS LONG,sText AS STRING)
DECLARE SUB SetTabPageRectDDT(BYVAL hDlg AS LONG,rcRet AS RECT)

'---Globals
GLOBAL ghTab() AS LONG  'keep handles for each tab page

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
FUNCTION PBMAIN()

    LOCAL ticc AS INIT_COMMON_CONTROLSEX

    'Load the common controls library...
    ticc.dwSize = SIZEOF(ticc)
    ticc.dwICC = %ICC_WIN95_CLASSES OR %ICC_INTERNET_CLASSES OR %ICC_DATE_CLASSES
    CALL InitCommonControlsEx(ticc)

    CALL CreateMainDialog(%HWND_DESKTOP)

END FUNCTION

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
FUNCTION CreateMainDialog(BYVAL hParent AS LONG) AS LONG

    LOCAL lRslt AS LONG,hDlg AS LONG,hFont AS LONG
    LOCAL hIcon AS LONG,rc AS RECT

    CALL SetRect(rc,50,50,267,233)

    DIALOG NEW hParent, "Your Caption",rc.nLeft,rc.nTop,rc.nRight,rc.nBottom, _
        %WS_POPUP OR %WS_BORDER OR %WS_DLGFRAME OR %WS_CAPTION OR _
        %WS_MINIMIZEBOX OR %WS_CLIPSIBLINGS OR %WS_VISIBLE OR _
        %WS_SYSMENU OR %DS_NOFAILCREATE OR %DS_SETFONT OR %DS_3DLOOK, _
        %WS_EX_WINDOWEDGE OR %WS_EX_CONTROLPARENT, TO hDlg

    hFont = MakeFontEx("MS Sans Serif",8,400,0,0,0)
    DIALOG SEND hDlg, %WM_SETFONT, hFont, 0

    'load a system icon...
    hIcon = LoadIcon(%NULL,BYVAL %IDI_APPLICATION)
    CALL SetClassLong(hDlg,%GCL_HICON,hIcon)

    DIALOG SHOW MODAL hDlg, CALL MainDialogProc TO lRslt

    DeleteObject hFont

    FUNCTION = lRslt
END FUNCTION

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
CALLBACK FUNCTION MainDialogProc()

    LOCAL pNMHDR AS NMHDR PTR, PageNo AS LONG, hFontTab AS LONG

    SELECT CASE (CBMSG)

        CASE %WM_INITDIALOG
            'add the main tab control and tab pages...
            DIM ghTab(1) AS GLOBAL LONG
            CALL CreateMainTabControl(CBHNDL)
            CALL CreateMainDlgButtons(CBHNDL)
            CALL SetWindowPos(GetDlgItem(CBHNDL,%IDTAB_MAIN),%HWND_BOTTOM, _
                     0,0,0,0,%SWP_NOMOVE OR %SWP_NOSIZE)

        CASE %WM_COMMAND
            SELECT CASE LOWRD(CBWPARAM)
                CASE %IDC_OK
                    IF HIWRD(CBWPARAM) = %BN_CLICKED THEN
                        DIALOG END CBHNDL
                    END IF
                CASE %IDC_CANCEL,%IDCANCEL
                    IF HIWRD(CBWPARAM) = %BN_CLICKED THEN
                        DIALOG END CBHNDL
                    END IF
                CASE %IDC_APPLY
                    IF HIWRD(CBHNDL) = %BN_CLICKED THEN
                        '
                    END IF
               CASE %IDC_RADIOBUTTON_4
               CASE %IDC_RADIOBUTTON_5
                  
                    
            END SELECT

        CASE %WM_NOTIFY
            pNMHDR = CBLPARAM
            IF @pNMHDR.hWndFrom = GetDlgItem(CBHNDL,%IDTAB_MAIN) THEN
                SELECT CASE @pNMHDR.Code
                    CASE %TCN_SELCHANGING
                        CONTROL SEND CBHNDL,%IDTAB_MAIN,%TCM_GETCURSEL,0,0 TO PageNo
                        DIALOG SHOW STATE ghTab(PageNo),%SW_HIDE
                    CASE %TCN_SELCHANGE
                        CONTROL SEND CBHNDL,%IDTAB_MAIN,%TCM_GETCURSEL,0,0 TO PageNo
                        DIALOG SHOW STATE ghTab(PageNo),%SW_SHOW
                END SELECT
            END IF

        CASE %WM_DESTROY
            'destroy the tab control font...
            CONTROL SEND CBHNDL,%IDTAB_MAIN,%WM_GETFONT,0,0 TO hFontTab
            IF ISTRUE(hFontTab) THEN CALL DeleteObject(hFontTab)

    END SELECT
END FUNCTION

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
FUNCTION CreateDialogTabPage1(BYVAL hParent AS LONG) AS LONG

    LOCAL hDlg AS LONG,hFont AS LONG,rc AS RECT,sText AS STRING,lRslt AS LONG
    LOCAL STYLE AS DWORD,StyleEx AS DWORD,szCaption AS ASCIIZ*255

    DIALOG NEW hParent,"TabPage1",0,0,0,0,%WS_CHILD OR %DS_CONTROL _
        OR %WS_CLIPSIBLINGS OR %DS_NOFAILCREATE OR %DS_SETFONT,0,TO hDlg

    '---
    szCaption = "Radio1"
    CALL SetRect(rc,47,37,133,12)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_TABSTOP OR _
              %WS_VISIBLE OR %BS_AUTORADIOBUTTON
    StyleEx = 0
    CONTROL ADD OPTION,hDlg,%IDC_RADIOBUTTON_1,szCaption, _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx
    '---
    szCaption = "Radio2"
    CALL SetRect(rc,47,55,133,12)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_TABSTOP OR _
              %WS_VISIBLE OR %BS_AUTORADIOBUTTON
    StyleEx = 0
    CONTROL ADD OPTION,hDlg,%IDC_RADIOBUTTON_2,szCaption, _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx
    '---
    szCaption = "Radio3"
    CALL SetRect(rc,47,74,133,12)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_TABSTOP OR _
              %WS_VISIBLE OR %BS_AUTORADIOBUTTON
    StyleEx = 0
    CONTROL ADD OPTION,hDlg,%IDC_RADIOBUTTON_3,szCaption, _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx
    '---
    szCaption = "GroupBox2"
    CALL SetRect(rc,27,25,173,74)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_VISIBLE OR %BS_GROUPBOX
    StyleEx = 0
    CONTROL ADD FRAME,hDlg,%IDC_GROUPBOX_2,szCaption, _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx
    

    ghTab(0) = hDlg

    DIALOG SHOW MODELESS hDlg, CALL TabPageDlgProc1 TO lRslt
    DIALOG SHOW STATE hDlg,%SW_HIDE

    FUNCTION = lRslt
END FUNCTION

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
FUNCTION CreateDialogTabPage2(BYVAL hParent AS LONG) AS LONG

    LOCAL hDlg AS LONG,hFont AS LONG,rc AS RECT,sText AS STRING,lRslt AS LONG
    LOCAL STYLE AS DWORD,StyleEx AS DWORD,szCaption AS ASCIIZ*255

    DIALOG NEW hParent,"TabPage2",0,0,0,0,%WS_CHILD OR %DS_CONTROL _
        OR %WS_CLIPSIBLINGS OR %DS_NOFAILCREATE OR %DS_SETFONT,0,TO hDlg

    '---
    szCaption = "CheckBox1"
    CALL SetRect(rc,53,71,133,12)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_TABSTOP OR _
              %WS_VISIBLE OR %BS_AUTOCHECKBOX
    StyleEx = 0
    CONTROL ADD CHECKBOX,hDlg,%IDC_CHECKBOX_1,szCaption, _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx
    '---
    szCaption = "CheckBox2"
    CALL SetRect(rc,53,89,133,12)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_TABSTOP OR _
              %WS_VISIBLE OR %BS_AUTOCHECKBOX
    StyleEx = 0
    CONTROL ADD CHECKBOX,hDlg,%IDC_CHECKBOX_2,szCaption, _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx
    '---
    szCaption = "CheckBox3"
    CALL SetRect(rc,53,108,133,12)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_TABSTOP OR _
              %WS_VISIBLE OR %BS_AUTOCHECKBOX
    StyleEx = 0
    CONTROL ADD CHECKBOX,hDlg,%IDC_CHECKBOX_3,szCaption, _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx
    '---
    szCaption = "GroupBox1"
    CALL SetRect(rc,27,50,180,100)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_VISIBLE OR %BS_GROUPBOX
    StyleEx = 0
    CONTROL ADD FRAME,hDlg,%IDC_GROUPBOX_1,szCaption, _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx

    ghTab(1) = hDlg

    DIALOG SHOW MODELESS hDlg, CALL TabPageDlgProc2 TO lRslt
    DIALOG SHOW STATE hDlg,%SW_HIDE

    FUNCTION = lRslt
END FUNCTION

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
CALLBACK FUNCTION TabPageDlgProc1()

    LOCAL ptnmhdr AS NMHDR PTR

    SELECT CASE CBMSG

        CASE %WM_COMMAND
            SELECT CASE CBCTL
                CASE %IDC_RADIOBUTTON_1
                    IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
                    END IF
                CASE %IDC_RADIOBUTTON_2
                    IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
                    END IF
                CASE %IDC_RADIOBUTTON_3
                    IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
                    END IF
            END SELECT

        CASE %WM_DESTROY
            CALL DeleteControlFont(CBHNDL)

    END SELECT

END FUNCTION

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
CALLBACK FUNCTION TabPageDlgProc2()

    LOCAL ptnmhdr AS NMHDR PTR

    SELECT CASE CBMSG

        CASE %WM_COMMAND
            SELECT CASE CBCTL
                CASE %IDC_CHECKBOX_1
                    IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
                    END IF
                CASE %IDC_CHECKBOX_2
                    IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
                    END IF
                CASE %IDC_CHECKBOX_3
                    IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
                    END IF
            END SELECT

        CASE %WM_DESTROY
            CALL DeleteControlFont(CBHNDL)

    END SELECT

END FUNCTION

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
FUNCTION CreateMainTabControl(BYVAL hDlg AS LONG) AS LONG

    LOCAL hFontTab AS LONG,i AS LONG,STYLE AS DWORD,StyleEx AS DWORD
    LOCAL rc AS RECT,rcm AS RECT,ttc_item AS TC_ITEM,szItem AS ASCIIZ*255

    'position tab within the main window...
    DIALOG GET CLIENT hDlg TO rcm.nRight,rcm.nBottom
    CALL SetRect(rc,2,2,rcm.nRight-4,rcm.nBottom-24-30)

    STYLE = %WS_CHILD OR %WS_VISIBLE OR %WS_TABSTOP OR _
            %TCS_TABS OR %TCS_SINGLELINE OR %TCS_FOCUSONBUTTONDOWN
    StyleEx = 0
    CONTROL ADD "SysTabControl32",hDlg,%IDTAB_MAIN,"", _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx

    hFontTab = MakeFontEx("MS Sans Serif",8,0,0,0,0)
    CONTROL SEND hDlg,%IDTAB_MAIN,%WM_SETFONT,hFontTab,%TRUE

    'Insert tabs in the tab control...
    DIM sText(1) AS STRING
    sText(0) = "Tab1"
    sText(1) = "Tab2"

    FOR i = 0 TO 1
        szItem              = sText(i)
        ttc_item.mask       = %TCIF_TEXT
        ttc_item.pszText    = VARPTR(szItem)
        ttc_item.cchTextMax = LEN(szItem)
        ttc_item.iImage     = -1
        ttc_item.lParam     = 0
        CONTROL SEND hDlg,%IDTAB_MAIN,%TCM_INSERTITEM,i,VARPTR(ttc_item)
    NEXT

    'create the tab pages...
    CALL CreateDialogTabPage1(hDlg)
    CALL CreateDialogTabPage2(hDlg)

    'allow the tab pages to fit evenly within the tab control...
    CALL SetTabPageRectDDT(hDlg,BYVAL VARPTR(rc))
    FOR i = 0 TO UBOUND(ghTab)
        DIALOG SET LOC ghTab(i),rc.nLeft,rc.nTop
        DIALOG SET SIZE ghTab(i),rc.nRight,rc.nBottom
    NEXT

    '---
    CALL SetRect(rc,47,185,60,18)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_TABSTOP OR _
              %WS_VISIBLE OR %BS_AUTORADIOBUTTON
    StyleEx = 0
    CONTROL ADD OPTION,hDlg,%IDC_RADIOBUTTON_4,"Radio4", _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx
    '---
    CALL SetRect(rc,47,200,60,18)
    STYLE   = %WS_CHILD OR %WS_CLIPSIBLINGS OR %WS_TABSTOP OR _
              %WS_VISIBLE OR %BS_AUTORADIOBUTTON
    StyleEx = 0
    CONTROL ADD OPTION,hDlg,%IDC_RADIOBUTTON_5,"Radio5", _
        rc.nLeft,rc.nTop,rc.nRight,rc.nBottom,STYLE,StyleEx
        
    
    'only show the first dialog on tab 1...
    DIALOG SHOW STATE ghTab(0),%SW_SHOW

    FUNCTION = GetDlgItem(hDlg,%IDTAB_MAIN)
END FUNCTION

'------------------------------------------------------------------------------
'  ** Helper routines **
'------------------------------------------------------------------------------
SUB CreateMainDlgButtons(BYVAL hDlg AS LONG)

    'add buttons to the main dialog...
    LOCAL rc AS RECT, rcm AS RECT
    LOCAL cap AS LONG, bor AS LONG,tm AS LONG,gap AS LONG

    DIALOG GET CLIENT hDlg TO rcm.nRight, rcm.nBottom

    cap = GetSystemMetrics(%SM_CYCAPTION):DIALOG PIXELS hDlg,cap,cap TO UNITS cap,cap
    bor = GetSystemMetrics(%SM_CXBORDER) :DIALOG PIXELS hDlg,bor,bor TO UNITS bor,bor
    tm  = 6 :DIALOG PIXELS hDlg,tm,tm   TO UNITS tm,tm
    gap = 6 :DIALOG PIXELS hDlg,gap,gap TO UNITS gap,gap

    CALL SetRect(rc,rcm.nRight+bor-tm-120-gap*2,rcm.nBottom-cap-6,40,15)
    CONTROL ADD BUTTON,hDlg,%IDC_OK,"&OK",rc.nLeft,rc.nTop+6,rc.nRight,rc.nBottom
    CALL SetRect(rc,rcm.nRight+bor-tm-80-gap,rcm.nBottom-cap-6,40,15)
    CONTROL ADD BUTTON,hDlg,%IDC_CANCEL,"&Cancel",rc.nLeft,rc.nTop+6,rc.nRight,rc.nBottom
    CALL SetRect(rc,rcm.nRight+bor-tm-40,rcm.nBottom-cap-6,40,15)
    CONTROL ADD BUTTON,hDlg,%IDC_APPLY,"&Apply",rc.nLeft,rc.nTop+6,rc.nRight,rc.nBottom

END SUB

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
SUB SetTabPageRectDDT(BYVAL hDlg AS LONG,rcRet AS RECT)

    LOCAL tRect AS RECT,twRect AS RECT,pRect AS RECT,hTab AS LONG
    LOCAL b AS LONG,l AS LONG,r AS LONG,t AS LONG
    LOCAL lb AS LONG,tb AS LONG,c AS LONG,f AS LONG,tm AS LONG

    hTab = GetDlgItem(hDlg,%IDTAB_MAIN)

    CALL GetWindowRect(hTab,twRect)
    CALL GetWindowRect(GetParent(hTab),pRect)

    lb = twRect.nLeft-pRect.nLeft
    tb = twRect.nTop-pRect.nTop
    c  = GetSystemMetrics(%SM_CYCAPTION)
    f  = GetSystemMetrics(%SM_CXBORDER)

    CONTROL SEND hDlg,%IDTAB_MAIN,%TCM_GETITEMRECT,0,VARPTR(tRect)

    tm = 4
    l  = lb-2*f+tm
    t  = tb-c-f+tRect.nBottom+tm
    r  = twRect.nRight-twRect.nLeft-4*f-2*tm
    b  = twRect.nBottom-twRect.nTop-tRect.nBottom-4*f-2*tm

    CALL SetRect(rcRet,l,t,r,b)

    DIALOG PIXELS GetParent(hTab),rcRet.nLeft,rcRet.nTop TO UNITS rcRet.nLeft,rcRet.nTop
    DIALOG PIXELS GetParent(hTab),rcRet.nRight,rcRet.nBottom TO UNITS rcRet.nRight,rcRet.nBottom

END SUB

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
SUB DeleteControlFont(BYVAL hDlg AS LONG)

    LOCAL hCtlChild AS LONG, hFontCtl AS LONG

    hCtlChild = GetWindow(hDlg,%GW_CHILD)
    hFontCtl = SendMessage(hCtlChild,%WM_GETFONT,0,0)
    IF ISTRUE(hFontCtl) THEN DeleteObject hFontCtl
    WHILE hCtlChild
        hFontCtl = SendMessage(hCtlChild,%WM_GETFONT,0,0)
        IF ISTRUE(hFontCtl) THEN DeleteObject hFontCtl
        hCtlChild = GetWindow(hCtlChild, %GW_HWNDNEXT)
    WEND

END SUB

'------------------------------------------------------------------------------
' Get type of character set - ansi, symbol... a must for some fonts.
'------------------------------------------------------------------------------
FUNCTION EnumCharSet(elf AS ENUMLOGFONT,ntm AS NEWTEXTMETRIC,BYVAL FontType AS LONG,CharSet AS LONG) AS LONG
    CharSet = elf.elfLogFont.lfCharSet
END FUNCTION
'------------------------------------------------------------------------------
' Create a desirable font and return its handle.
' Enhanced with proper enumeration of character set via EnumCharSet.
' Original code by Dave Navarro, Enhancement by Borje Hagsten.
'------------------------------------------------------------------------------
FUNCTION MakeFontEx(BYVAL sFont AS STRING, BYVAL PointSize AS LONG, BYVAL fBold AS LONG, _
                    BYVAL fItalic AS LONG, BYVAL fUnderline AS LONG, BYVAL StrikeThru AS LONG) AS LONG

    LOCAL hDC AS LONG, CharSet AS LONG, CyPixels AS LONG

    hDC = GetDC(%HWND_DESKTOP)
        CyPixels  = GetDeviceCaps(hDC, %LOGPIXELSY)
        EnumFontFamilies hDC, BYVAL STRPTR(sFont), CODEPTR(EnumCharSet), BYVAL VARPTR(CharSet)
    ReleaseDC %HWND_DESKTOP, hDC

    PointSize = 0 - (PointSize * CyPixels) \ 72

    FUNCTION = CreateFont(PointSize,0,0,0, fBold, _
                          fItalic,fUnderline,StrikeThru,CharSet, _
                          %OUT_TT_PRECIS,%CLIP_DEFAULT_PRECIS, _
                          %DEFAULT_QUALITY,%FF_DONTCARE, _
                          BYCOPY sFont)

END FUNCTION

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
SUB SetCtlTooltip(BYVAL hCtl AS LONG,sText AS STRING)

    STATIC hTooltip AS LONG,hInst AS LONG
    LOCAL ti AS TOOLINFO,szText AS ASCIIZ*255

    hInst = GetModuleHandle(BYVAL %NULL)

    IF hTooltip  = 0 THEN
        hToolTip = CreateWindowEx(0,"tooltips_class32","",%TTS_ALWAYSTIP, _
                                  0,0,0,0,0,BYVAL %NULL,hInst,BYVAL %NULL)
    END IF

    IF hTooltip THEN
        szText      = sText
        ti.cbSize   = LEN(ti)
        ti.uFlags   = %TTF_SUBCLASS OR %TTF_IDISHWND
        ti.hWnd     = GetParent(hCtl)
        ti.uId      = hCtl
        ti.lpszText = VARPTR(szText)
        CALL SendMessage(hToolTip,%TTM_ADDTOOL,0,BYVAL VARPTR(ti))
    END IF

END SUB

[Gösta H. Lovgren-2]

Most of this is way over my head but I do like to play a little. It doesn't matter if an Option is added to the Tab. It seems ANY control added to the Tab causes a hang.

    ' Add a Tab control DDT way...
    Control Add Tab,      hDlg,  %IDC_CP_OPTIONS, "Add Tab", 50, 100, 270, 117
    Tab Insert Page       hDlg,  %IDC_CP_OPTIONS, 1, 0, "Infrastruktur" To  hTab1
'    Control Add CheckBox, hTab1, %IDC_CP_MAINS,   "Strom", 2, 5, 105, 12
[B] [COLOR=red]Control Add Label,[/COLOR][/B] hTab1, %Id_TB_01, "Textbox", 10, 10, 120, 12 '<< causes hang
    Tab Insert Page       hDlg,  %IDC_CP_OPTIONS, 2, 0, "Sanitär"       To  hTab2
'    Control Add CheckBox, hTab2, %IDC_CP_MAINS,   "Strom", 2, 5, 105, 12

I tried a Textbox and it hung too as soon as Option button is clicked on the Tab dialog is licked, not the option on the tab itself.

Jules, I suggest you submit this to PB Support as a possible bug.

===============================
An error is the more dangerous
the more truth it contains.
Henri-Frédéric Amiel
===============================

[Werner Bleckwendt]

Thanks Jules for all your effort.

Sometimes I don't see the wood because of too many trees (German saying). I just did not have the idea to create that code snippet.

[Jules Marchildon]

Just to switch gears here...

Getting back to the problem of hanging when you activate the Option buttons and Tab 1 is shown with one Checkbox, click on the Option button, it hangs. If Tab 1 is not visible or if the checkbox is not added, no hanging. Interesting problem, I don't have a solution.

Here is a snippet to demonstrate the problem. Very minimum code from Werners large source code.

#PBFORMS CREATED V1.51
'------------------------------------------------------------------------------
' The first line in this file is a PB/Forms metastatement.
' It should ALWAYS be the first line of the file. Other
' PB/Forms metastatements are placed at the beginning and
' end of "Named Blocks" of code that should be edited
' with PBForms only. Do not manually edit or delete these
' metastatements or PB/Forms will not be able to reread
' the file correctly.  See the PB/Forms documentation for
' more information.
' Named blocks begin like this:    #PBFORMS BEGIN ...
' Named blocks end like this:      #PBFORMS END ...
' Other PB/Forms metastatements such as:
'     #PBFORMS DECLARATIONS
' are used by PB/Forms to insert additional code.
' Feel free to make changes anywhere else in the file.
'------------------------------------------------------------------------------

#COMPILE EXE
#DIM ALL

'------------------------------------------------------------------------------
'   ** Includes **
'------------------------------------------------------------------------------
#PBFORMS BEGIN INCLUDES
#IF NOT %DEF(%WINAPI)
    #INCLUDE "WIN32API.INC"
#ENDIF
#PBFORMS END INCLUDES
'------------------------------------------------------------------------------

'------------------------------------------------------------------------------
'   ** Constants **
'------------------------------------------------------------------------------
#PBFORMS BEGIN CONSTANTS
%IDD_DIALOG1 =  101
%IDC_BUTTON1 = 1001
%IDC_BUTTON2 = 1002
#PBFORMS END CONSTANTS
'------------------------------------------------------------------------------

%IDC_BUTTON3               = 1003
%IDC_LOCATION              = 1017  '
%IDC_CPNAME                = 1029
%IDC_NOISE2                = 1043  '
%IDC_NOISE3                = 1044
%IDC_CP_OPTIONS            = 1061  '
%IDC_CP_MAINS              = 1062  '

GLOBAL hTab1, hTab2, hTab3, hTab4 AS DWORD

'------------------------------------------------------------------------------
'   ** Declarations **
'------------------------------------------------------------------------------
DECLARE CALLBACK FUNCTION ShowDIALOG1Proc()
DECLARE FUNCTION ShowDIALOG1(BYVAL hParent AS DWORD) AS LONG
#PBFORMS DECLARATIONS
'------------------------------------------------------------------------------


'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
CALLBACK FUNCTION ShowCPProc()
    LOCAL cpname AS STRING
    LOCAL cTab AS LONG

    SELECT CASE AS LONG CBMSG

        CASE %WM_INITDIALOG
            

        CASE %WM_NCACTIVATE
            STATIC hWndSaveFocus AS DWORD
            IF ISFALSE CBWPARAM THEN
                hWndSaveFocus = GetFocus()
            ELSEIF hWndSaveFocus THEN
                SetFocus(hWndSaveFocus)
                hWndSaveFocus = 0
            END IF

        CASE %WM_COMMAND
            SELECT CASE AS LONG CBCTL
                CASE %IDC_NOISE2
                CASE %IDC_NOISE3
                CASE %IDC_BUTTON3
                    IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
                        DIALOG END CB.HNDL
                        FUNCTION = 1
                    END IF
               END SELECT
               
    END SELECT
END FUNCTION

'------------------------------------------------------------------------------
'
'------------------------------------------------------------------------------
FUNCTION ShowCP(BYVAL hParent AS DWORD) AS LONG
    LOCAL lRslt  AS LONG

    LOCAL hDlg   AS DWORD
    LOCAL hFont1 AS DWORD

    DIALOG NEW hParent, "Camping Platz Info", 70, 70, 350, 300, %WS_POPUP OR _
        %WS_BORDER OR %WS_DLGFRAME OR %WS_SYSMENU OR %WS_CLIPSIBLINGS OR _
        %WS_VISIBLE OR %DS_MODALFRAME OR %DS_CENTER OR %DS_3DLOOK OR _
        %DS_NOFAILCREATE OR %DS_SETFONT, %WS_EX_CONTROLPARENT OR %WS_EX_LEFT _
        OR %WS_EX_LTRREADING OR %WS_EX_RIGHTSCROLLBAR, TO hDlg

    CONTROL ADD OPTION,   hDlg, %IDC_NOISE2, "Nachts ruhig", 50, 20, 110, 12
    CONTROL ADD OPTION,   hDlg, %IDC_NOISE3, "Überwiegend ruhig", 50, 40, 110, 12

    ' Add a Tab control DDT way...
    CONTROL ADD TAB,      hDlg,  %IDC_CP_OPTIONS, "", 50, 100, 270, 117
    TAB INSERT PAGE       hDlg,  %IDC_CP_OPTIONS, 1, 0, "Infrastruktur" TO  hTab1
    CONTROL ADD CHECKBOX, hTab1, %IDC_CP_MAINS,   "Strom", 2, 5, 105, 12
    TAB INSERT PAGE       hDlg,  %IDC_CP_OPTIONS, 2, 0, "Sanitär"       TO  hTab2

    CONTROL ADD BUTTON, hDlg, %IDC_BUTTON3, "&Close", 50, 250, 50, 15
    
    DIALOG SHOW MODAL hDlg, CALL ShowCPProc TO lRslt

    FUNCTION = lRslt
END FUNCTION


             
'------------------------------------------------------------------------------
'   ** Main Application Entry Point **
'------------------------------------------------------------------------------
FUNCTION PBMAIN()
    ShowDIALOG1 %HWND_DESKTOP
END FUNCTION
'------------------------------------------------------------------------------

'------------------------------------------------------------------------------
'   ** CallBacks **
'------------------------------------------------------------------------------
CALLBACK FUNCTION ShowDIALOG1Proc()

    SELECT CASE AS LONG CBMSG
        CASE %WM_INITDIALOG
            ' Initialization handler

        CASE %WM_NCACTIVATE
            STATIC hWndSaveFocus AS DWORD
            IF ISFALSE CBWPARAM THEN
                ' Save control focus
                hWndSaveFocus = GetFocus()
            ELSEIF hWndSaveFocus THEN
                ' Restore control focus
                SetFocus(hWndSaveFocus)
                hWndSaveFocus = 0
            END IF

        CASE %WM_COMMAND
            ' Process control notifications
            SELECT CASE AS LONG CBCTL
                CASE %IDC_BUTTON1
                    IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
                        ShowCP CB.HNDL
                    END IF
                CASE %IDC_BUTTON2
                    IF CBCTLMSG = %BN_CLICKED OR CBCTLMSG = 1 THEN
                        DIALOG END CB.HNDL
                         FUNCTION = 1
                    END IF

            END SELECT
    END SELECT
END FUNCTION
'------------------------------------------------------------------------------

'------------------------------------------------------------------------------
'   ** Dialogs **
'------------------------------------------------------------------------------
FUNCTION ShowDIALOG1(BYVAL hParent AS DWORD) AS LONG
    LOCAL lRslt AS LONG

#PBFORMS BEGIN DIALOG %IDD_DIALOG1->->
    LOCAL hDlg  AS DWORD

    DIALOG NEW hParent, "Dialog1", 165, 89, 201, 121, %WS_POPUP OR %WS_BORDER _
        OR %WS_DLGFRAME OR %WS_THICKFRAME OR %WS_CAPTION OR %WS_SYSMENU OR _
        %WS_MINIMIZEBOX OR %WS_MAXIMIZEBOX OR %WS_CLIPSIBLINGS OR _
        %WS_VISIBLE OR %DS_MODALFRAME OR %DS_3DLOOK OR %DS_NOFAILCREATE OR _
        %DS_SETFONT, %WS_EX_CONTROLPARENT OR %WS_EX_LEFT OR _
        %WS_EX_LTRREADING OR %WS_EX_RIGHTSCROLLBAR, TO hDlg
    CONTROL ADD BUTTON, hDlg, %IDC_BUTTON1, "PopUp Dialog", 70, 45, 50, 15
    CONTROL ADD BUTTON, hDlg, %IDC_BUTTON2, "&Close", 70, 85, 50, 15
#PBFORMS END DIALOG

    DIALOG SHOW MODAL hDlg, CALL ShowDIALOG1Proc TO lRslt

#PBFORMS BEGIN CLEANUP %IDD_DIALOG1
#PBFORMS END CLEANUP

    FUNCTION = lRslt
END FUNCTION
'------------------------------------------------------------------------------

[Werner Bleckwendt]

@Michael

Sorry, but I'm unable to follow. With the changed order of the control add statements the tab function works as expected and also all other controls of that dialog except the control add option. If one clicks such an option (radio button) of the same dialog the program hangs. The option control sends WM_COMMAND messages and I don't see why this could conflict with the WM_NOTIFY messages of the tab control no matter if I check the messages in the callback or not.

[Michael Mattias]

The important thing to take from this experience is...

Notification messages are just that: NOTIFICATIONS. Something HAS ALREADY HAPPENED.

The related 'opportunity' notification is TCN_SELCHANGING:

Notifies a tab control's parent window that the currently selected tab is about to change. This message is sent in the form of a WM_NOTIFY message.

This means the user HAS ALREADY TAKEN AN ACTION which will result in a selection change. Your choices at this point?

Return TRUE to prevent the selection from changing, or FALSE to allow the selection to change.

MCM