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Strange Lockup Problem..... Help!

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  • Fred Oxenby
    Lance, I hate to take up your time with this,but look at the code that follows.
    Issue No1: All buttons have the main dialog as parent.
    Issue No2: All other controls have a child-dialog to Main as parent
    This code will 'enter an endless loop'
    However, you are right, adding %WS_GROUP to any of the controls on the
    child-dialog will prevent the endless loop. !!!Not on same parent!!!
    If you place the buttons on a child-dialog it will not lock.
    So what I see, is that in a child-dialog you dont need to terminate
    the groupsetting, but in a "normal" dialog (without %WS_CHILD) you have to do it.
    [ UPDATED ]
    #Compile Exe
    #Register None
    #Include ""
    %lbSys = 1000
    %TxSys = 2000
    %LbStyleX  = 0
    %TxtStyleX  = %WS_EX_STATICEDGE
    Global ghWndOpt As Long
    Global ghWndPg1 As Long
    Declare Function MakeFont(ByVal Font As String, ByVal PointSize As Long) As Long
    Function PbMain()As Long
    '..Create Dialog-font
      hFont& = MakeFont("Courier New", 9)
    '..Create Main Dialog 
      Dialog New %HWND_DESKTOP, "Spider Inställningar",77,22, 320, 220,%DlgStyle,%DlgStyleX, To ghWndOpt
      If ghWndOpt = 0 Then Exit Function
      Dialog Send ghWndOpt, %WM_SETFONT,hFont&, 1
    '..Create Toolbar like buttons......................
      Control Add Button, ghWndOpt,3000,"System" ,20,2,34,15,DSStyle& Or %WS_GROUP
      Control Add Button, ghWndOpt,3001,"DiskMap",55,2,34,15,DSStyle&
      Control Add Button, ghWndOpt,3002,"BarrLog",90,2,34,15,DSStyle&
      Control Add Button, ghWndOpt,3003,"Com-Log",125,2,34,15,DSStyle&
      Control Add Button, ghWndOpt,3004,"CD-Log" ,160,2,34,15,DSStyle&
    '..Create Child Dialog (Page one)...................
      Dialog New ghWndOpt, "", _
                  20, 20, 300, 200, _
                  %PgStyle,%PgStyleX To ghWndPg1
      Dialog Send ghWndPg1, %WM_SETFONT,hFont&, 1
      chWnd&  = ghWndPg1
      cLeft&  = 0
      cTop&   = 5
      cWidth& = 80
      cHight& = 10
      cId&    = %lbSys
      cCapt$  = "SpiderId: "
      GoSub Page1_AddLabel
      cTop&= 15:Incr cId& :cCapt$="File-Server: "     :GoSub Page1_AddLabel
      cTop&= 25:Incr cId& :cCapt$="AS400 IP-Adress: " :GoSub Page1_AddLabel
      cTop&= 35:Incr cId& :cCapt$="System Namn: "     :GoSub Page1_AddLabel
      cTop&= 45:Incr cId& :cCapt$="Library Namn: "    :GoSub Page1_AddLabel
      cTop&= 55:Incr cId& :cCapt$="Datakö BarrIn: "   :GoSub Page1_AddLabel
      cTop&= 65:Incr cId& :cCapt$="Datakö BarrUt: "   :GoSub Page1_AddLabel
      cLeft&  = 80
      cTop&   = 5
      cWidth& = 30
      cHight& = 10
      cId&    = %TxSys
      cCapt$  = ""
      TxStyle& = %TxtStyle Or %ES_NUMBER:TxStyleX& = %TxtStyleX
      GoSub Page1_AddTextBox
      cTop& = 15:cWidth&=200:Incr cId&:TxStyle&=%TxtStyle:GoSub Page1_AddTextBox
      cTop& = 25:Incr cId&:GoSub Page1_AddTextBox
      cTop& = 35:Incr cId&:GoSub Page1_AddTextBox
      cTop& = 45:Incr cId&:GoSub Page1_AddTextBox
      cTop& = 55:Incr cId&:GoSub Page1_AddTextBox
      cTop& = 65:Incr cId&:GoSub Page1_AddTextBox
      Dialog Show State ghWndPg1, %SW_SHOW
      Dialog Show Modal ghWndOpt, Call FrmOpt
      Exit Function
      Control Add Label,chWnd&,cId&,cCapt$,cLeft&,cTop&,cWidth&,cHight&,%LbStyle,%LbStyleX 
      Control Send chWnd&, cId&, %WM_SETFONT,hFont&, 1
      Control Add TextBox,chWnd&,cId&,"",cLeft&,cTop&,cWidth&,cHight&,%TxtStyle,%TxtStyleX 
      Control Send chWnd&,cId&, %WM_SETFONT,hFont&, 1
    End Function
    Function MakeFont(ByVal Font As String, ByVal PointSize As Long) As Long
      Local hDC      As Long
      Local CyPixels As Long
      hDC = GetDC(%HWND_DESKTOP)
      CyPixels  = GetDeviceCaps(hDC, %LOGPIXELSY)
      ReleaseDC %HWND_DESKTOP, hDC
      PointSize = (PointSize * CyPixels) \ 72
      Function = CreateFont(0 - PointSize, 0, 0, 0, %FW_NORMAL, 0, 0, 0, _
                %DEFAULT_QUALITY, %FF_DONTCARE, ByCopy Font)
    End Function
    mailto:[email protected][email protected]</A>

    [This message has been edited by Fred Oxenby (edited July 06, 2001).]

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  • Lance Edmonds

    The problem with Scott's code is the lack of a %WS_GROUP style in the button that is not part of the group but follows the group. Alternatively (well, additionally really), the control before the group should have the %WS_GROUP style added too.

    The root of the problem is that only one control has the group style set, so a infinite loop occurs when the next group tab position is enumerated.

    However, the construction of the code is not what I would deem "optimal", but it does work.

    PowerBASIC Support
    mailto:[email protected][email protected]</A>

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  • Fred Oxenby
    there are a few of postings about this problem
    one is
    probably not there , but you will find it in poffs..
    i reported this problem in july 1999, i dont think there has been a sulotion from pb
    my workaround was placing pushbuttons on a seperate dialog.
    other advices have been to use control add "button" and take care of the image yourself.

    mailto:[email protected][email protected]</a>

    [this message has been edited by fred oxenby (edited july 06, 2001).]

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  • Lance Edmonds
    (edited response!)

    First, the main dialog should have the extended style %WS_EX_CONTROLPARENT to make it work properly with the %DS_CONTROL style of the child dialog.

    I think that the order in which you are SHOWing the dialogs is also not quite right. This will require some reengineering in order to build the child dialog after the main dialog has been created and DIALOG SHOW MODAL is executed. For example, create the child dialog in the main dialog callback in response to %WM_INITDIALOG or similar.

    Next, you'll probably need to add a %WS_GROUP style to the first control *after* the radio button group, or the CANCEL button may implicitly become part of the group too.

    Finally, the use of %BS_ICON is probably not necessary for an IMGBUTTON.

    If that still does not help, post the "reengineered" code in compilable form and I'll take a look for you.

    PS: In your callback, be sure it is actually receiving a %BN_CLICKED notification (in CBCTLMSG), don't just assume that is the case before acting upon the %WM_COMMAND message.

    PowerBASIC Support
    mailto:[email protected][email protected]</A>

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  • Scott Slater
    started a topic Strange Lockup Problem..... Help!

    Strange Lockup Problem..... Help!

    I am having a strange problem with using child windows with the %DS_CONTROL
    property along with a radio style pushbutton. Here's the problem whenever
    you place any control on the child window (ie. Label, Button, Frame) the ap
    locks up when you push one of the radio style buttons. If there is no
    controls on the child window, the radio button works fine. Here is an
    example piece of code that shows the problem.

    #Compile Exe
    #Dim All
    #Include ""
    CallBack Function DlgProc
       Select Case CbMsg
         Case %WM_COMMAND
           Select Case LoWrd(CbWparam)
             Case 100
             Case 110
             Case 120
               Dialog End CbHndl, 0
           End Select
       End Select
    End Function
    Function PbMain As Long
       Local hDlg  As Long
       Local hDlg2 As Long
       Dialog New 0, "Test W/Child Window",,,200,120 To hDlg
       ' Child Window for Start of a TAB Control - But when this
       ' Window has anything in it, and the AUTORADIOBUTTON style
       ' buttons are defined below the app locks up whenever one
       ' of those buttons is pushed!
       Dialog New hDlg,"" , 5, 55, 141, 38, %WS_CHILD Or %DS_CONTROL, 0 To hDlg2
       Dialog Show Modeless hDlg2 Call DlgProc
       ' With the label below Commented out the ap will not lock
       ' up, but with the label un-commented the ap locks up as
       ' soon as you press one of the two image buttons (blank)
       ' Anyone know why?????
       Control Add Label, hDlg2, -1, "Test Label", 3, 3, 80, 8
       Control Add ImgButton, hDlg, 100, "", 165, 20, 27, 25, _
       Control Add ImgButton, hDlg, 110, "", 165, 50, 27, 25, _
       Control Add Button, hDlg, 120, "&Quit", 165, 80, 27, 25
       Dialog Show Modal hDlg Call DlgProc
    End Function
    Anyone have any idea's why this would be locking up like this?? I have
    been playing around with this all night and have no clue...