Wanted WS_CLIPSIBLINGS sample

[Semen Matusovski]

Two days ago, I asked, how to draw a frame.
Lance recommended to use WS_CLIPSIBLINGS.

I followed (it was under Win2000). All was nice, until I reboot to Windows 95b.
Here obvious repainting problems.
The same happends in Windows 98.

Can anybody post WS_CLIPSIBLINGS sample, which works under 9x?

In my impression, Windows doesn't invalidate "brothers".

PS. I changed an order ("frames" - last). Looks that works, but I don't like a repainting process.
So, sample wanted anyway.

[This message has been edited by Semen Matusovski (edited April 09, 2001).]

[Lance Edmonds]

As you noted, overlapped siblings should be drawn in the "right" order to be drawn correctly. What is the problem with the repainting process?

I've seen similar problems when using %WM_CLIPCHILDREN (with %WS_CLIPSIBLINGS) on child dialogs used in a tab-control dialog.

When you say "brothers", you really mean "siblings", hence the message %WM_CLIPSIBLINGS.



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

[Semen Matusovski]

Lance --
I imitated a situation (note, I am about 9x only).
Problems, when frame is first. Try to move a window to right side and to return.
If frame is last, all works, but I don't like repainting process (very well visible in my program, unlike a case, when frame is first).

To my surprise, with DDT frame ("Button") happends exactly the same: works, if last.

   #Compile Exe
   #Dim All
   #Register None
   #Include "Win32Api.INC"

   CallBack Function DlgProc
      Select Case CbMsg
         Case %WM_INITDIALOG
            Control Add Label, CbHndl, 101, "Frame", 220, 10, 180, 110, %WS_CLIPSIBLINGS, %ws_ex_clientedge ' <==============
          '  Control Add Frame, CbHndl, 101, "Frame", 220, 10, 180, 110 ' <=== Also doesn't work ===========
         
            Control Add Label, CbHndl, 103, "Label", 10, 10, 200, 10, %WS_CHILD Or %WS_VISIBLE
            Control Add TextBox, CbHndl, 104, "text", 10, 22, 200, 14
            Control Add Label, CbHndl, 105, "Label", 230, 54, 160, 10, %WS_CHILD Or %WS_VISIBLE
            Control Add TextBox, CbHndl, 106, "Text", 230, 66, 160, 14
            Control Add Label, CbHndl, 107, "<------ Label ---->", 230, 82, 160, 10, %WS_CHILD Or %WS_VISIBLE
            Control Add TextBox, CbHndl, 108, "<-------- Text ----->", 230, 94, 160, 14
            Control Add Button, CbHndl, 109, "cText12", 320, 135, 80, 15
            
            
        End Select
   End Function

   Function PbMain
      Local hDlg As Long
      Dialog New 0, "", ,, 410, 200, %WS_CAPTION Or %WS_SYSMENU Or %WS_CLIPCHILDREN Or %WS_CLIPSIBLINGS To hDlg
      Dialog Show Modal hDlg Call DlgProc
   End Function

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E-MAIL: [email protected]

[Aldo Cavini]

Semen,

Your code doesn't work on my system too (NT4, both statements). I tried to move the CONTROL ADD FRAME to the bottom of the control adds section, and now it seems to work.

See http://support.microsoft.com/support.../Q182/3/84.ASP - It is about groups (frames) in Windows CE, but I found the following:

...group boxes cover and hide any controls that are beneath them in the Z-Order...
...To avoid this, the group box must be placed lower in the Z-order than the controls that it contains. You can change the Z-order of the group box by editing the tab stop order so that the group box comes last...

May be the problem key is the z-order.

Aldo


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[Lance Edmonds]

Correct, since drawing the control last places it last in the z-order... that is, the z-order is determined by the order of creation.


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

[Semen Matusovski]

z-order - unf., it's clear. But imagine that it's necessary to add "siblings" on fly.
Let's return to initial question.

A control, which depends, of z-order - not serious.
Any new ideas ? (except creation regions for frame - last, of course, should work anyway)

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E-MAIL: [email protected]

[Fred Oxenby]

Tested on Win/ME

  Control Add Frame, CbHndl, 101, "Frame", 220, 10, 180, 110 ,%WS_CHILD,%WS_EX_TRANSPARENT ' <=== DOES WORK ===========
----
  Control Add Label, CbHndl, 105, "Label2", 230, 54, 160, 14, %WS_CHILD Or %WS_VISIBLE Or %WS_Border 'Or %WS_CLIPSIBLINGS
  Control Add TextBox, CbHndl, 106, "Text2", 230, 63, 160, 14, %WS_CHILD Or %WS_VISIBLE Or %WS_Border 
--->use %WS_CLIPSIBLINGS on label. Works as expected (Z-order is enforced)  
    Initially Label is overlapping textbox, move another window across and
    label is covering part of textbox
   
  Dialog New 0, "", ,, 410, 200, %WS_CAPTION Or %WS_SYSMENU Or %WS_CLIPCHILDREN  To hDlg
--->%WS_CLIPSIBLINGS is for %WS_CHILD-style only!

------------------
Fred
mailto:[email protected][email protected]</A>
http://www.oxenby.se



[This message has been edited by Fred Oxenby (edited April 10, 2001).]

[Aldo Cavini]

Semen,

May be you want to setup your new added controls in a certain tab-stop order. As I understand, tab-stop order and z-order are the same. You can use SetWindowPos, declaring the correct hWndInsertAfter value and using flags like SWP_NOMOVE, SWP_NOSIZE, etc. This way you'll also have the controls inserted before the frame.

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[This message has been edited by Aldo Cavini (edited April 10, 2001).]

[Semen Matusovski]

Fred -
I tested your variant under 95. Works.
But my custom control is mostly "Label" (fills whole client area in BeginPaint).
I changed Frame to Label in test sample, and, unf., nothing good.


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E-MAIL: [email protected]

[Jules Marchildon]

Semen;

Send me your code via email to compile on my win98 OS and I will see if
I can find a solution for you. I need to see the visual ill-effects
of your code.

I spent alot of time with standard Groupbox frame, Static frame and Custom draw frame
with my visual forms draw-move-size engine. I ended up using a combination
of either transparency / erase background / changing the Z-order of
controls to optimize flicker and repaint issues. If you played with the
draw-move-size engine executable and dropped some Groupboxes and placed
controls inside on the fly, you will see the results.

Hope I can help...
Regards,
Jules

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E-MAIL: [email protected]

[Semen Matusovski]

Custom control is not too big. So I added it to test sample.

   #Compile Exe
   #Dim All
   #Register None
   #Include "Win32Api.INC"

   %DlgColor = &HC08040

   '******************************
   '*      pbLabel               *
   '******************************
   Global pbLabel_Default_ForeColor As Long, pbLabel_Default_BackColor As Long
   %pbLabel_Frame = 4

   Function Register_pbLabel As Long
     Local wc          As WNDCLASS
     Local szClassName As Asciiz * 8
     szClassName      = "pbLabel"
     wc.lpfnWndProc   = CodePtr(pbLabelProc)
     wc.hInstance     = GetModuleHandle(ByVal 0&)
     wc.hCursor       = LoadCursor(ByVal 0&, ByVal %IDC_ARROW)
     wc.hBrBackGround = GetStockObject(%NULL_BRUSH)
     wc.lpszClassName = VarPtr(szClassName)
     wc.cbWndExtra    = 8
     Function = RegisterClass(wc)
   End Function

   %pbLabel_ForeColor = 0
   %pbLabel_BackColor = 4

   Function pbLabelProc (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
            Dim i As Long, j As Long, jj As Long, k As Long, kk As Long
            Dim hMemDC As Long, hMemBmp As Long, pBits As Long Ptr
            Dim Clr As Long
            Static hFont As Long
            Dim bmi As BITMAPINFO, bm As BITMAP, ps As PAINTSTRUCT, rc As Rect

      Select Case wMsg
         Case %WM_CREATE
            ' Defaults
            SetWindowLong hWnd, %pbLabel_ForeColor, pbLabel_Default_ForeColor
            SetWindowLong hWnd, %pbLabel_BackColor, pbLabel_Default_BackColor
         Case %WM_SETFONT
            hFont = wParam

         Case %WM_SETTEXT
            Function = DefWindowProc(hWnd, wMsg, wParam, lParam)
            InvalidateRect hWnd, ByVal 0, 0
            UpdateWindow hWnd
            Exit Function

         Case %WM_PAINT
            Dim MyClr(2) As Long
            MyClr(0) = MakLng(&H0300, 2)
            MyClr(1) = GetWindowLong (hWnd, %pbLabel_ForeColor)
            MyClr(2) = GetWindowLong (hWnd, %pbLabel_BackColor)
            MyClr(0) = CreatePalette (ByVal VarPtr(MyClr(0)))

            BeginPaint hWnd, ps
            SelectPalette ps.hDC, MyClr(0), %False
            RealizePalette ps.hDC

            GetClientRect hWnd, rc
            hMemDC  = CreateCompatibleDC(ps.hDC)
            bmi.bmiHeader.biSize = SizeOf(bmi.bmiHeader)
            bmi.bmiHeader.biWidth = rc.nRight - rc.nLeft
            bmi.bmiHeader.biHeight = rc.nBottom - rc.nTop
            bmi.bmiHeader.biPlanes = 1
            bmi.bmiHeader.biBitCount = 32
            bmi.bmiHeader.biCompression = %BI_RGB
            hMemBmp = CreateDIBSection(hMemDC, bmi, %DIB_RGB_COLORS, 0, 0, 0)
            GlobalLock hMemBmp: SelectObject hMemDC, hMemBmp
            GetObject hMemBmp, SizeOf(bm), bm
            pBits = bm.bmBits
            i = GetWindowLong (hWnd, %pbLabel_BackColor)
            j = (i And &H00FF0000): Shift Right j, 16
            k = (i And &H0000FF00): Shift Right k, 8
            i = (i And &HFF)
            Clr = Rgb(j, k, i)

            For j = rc.nBottom - 1 To rc.nTop Step - 1
               For k = rc.nLeft To rc.nRight - 1
                  @pBits = Clr: pBits = pBits + 4
               Next
            Next

            SetBkMode hMemDC, %OPAQUE
            SetBkColor  hMemDC, GetWindowLong (hWnd, %pbLabel_BackColor)
            SetTextColor hMemDC, GetWindowLong (hWnd, %pbLabel_ForeColor)
            SelectObject hMemDC, hFont
            Dim Txt As Asciiz * 100, sz As SIZEL
            GetWindowText hWnd, Txt, SizeOf(Txt)

            i = GetWindowLong(hWnd, %GWL_STYLE)
            If (i And %SS_RIGHT) = %SS_RIGHT   Then j = %SS_RIGHT Else _
            If (i And %SS_CENTER) = %SS_CENTER Then j = %SS_CENTER Else _
                                                    j = %SS_LEFT

            GetTextExtentPoint32 hMemDC, Txt, Len(Txt), sz
            GetClientRect hWnd, rc

            If (i And %pbLabel_FRAME) = %pbLabel_FRAME Then
               Select Case j
                  Case %SS_CENTER: sz.cx = Max(0, (rc.nRight - rc.nLeft - sz.cx) \ 2)
                  Case %SS_LEFT:   sz.cx = Min(0.05 * (rc.nRight - rc.nLeft), rc.nRight - rc.nLeft - sz.cx)
                  Case %SS_RIGHT:  sz.cx = Max(0, 0.95 * (rc.nRight - rc.nLeft) - sz.cx)
               End Select
               pBits = bm.bmBits
               i = GetWindowLong (hWnd, %pbLabel_ForeColor)
               j = (i And &H00FF0000): Shift Right j, 16
               k = (i And &H0000FF00): Shift Right k, 8
               i = (i And &HFF)
               Clr = Rgb(j, k, i)
               If sz.cy = 0 Then GetTextExtentPoint32 hMemDC, " ", 1, sz
               For j = rc.nBottom - 1 To rc.nTop Step - 1
                  For k = rc.nLeft To rc.nRight - 1
                     If j >= (rc.nTop + sz.cy / 2) Then
                        If (k = rc.nLeft) Or (k = (rc.nRight - 1)) Or _
                           (j = rc.nBottom - 1) Or (j = rc.nTop + sz.cy / 2) Then @pBits = Clr
                     End If
                     pBits = pBits + 4
                  Next
               Next
               sz.cy = 0
            Else
               Select Case j
                  Case %SS_CENTER: sz.cx = Max(0, (rc.nRight - rc.nLeft - sz.cx) \ 2)
                  Case %SS_LEFT:   sz.cx = 0
                  Case %SS_RIGHT:  sz.cx = Max(0, (rc.nRight - rc.nLeft - sz.cx))
               End Select
               sz.cy = Max(0, (rc.nBottom - rc.nTop - sz.cy) \ 2)
            End If

            TextOut hMemDC, rc.nLeft + sz.cx, rc.nTop + sz.cy, Txt, Len(Txt)
            BitBlt ps.hDC, 0, 0, rc.nRight, rc.nBottom, hMemDC, 0, 0, %SRCCOPY
            EndPaint hWnd, ps
            DeleteDC hMemDC
            DeleteObject hMemBmp
            DeleteObject MyClr(0)
            Exit Function

      End Select

      Function = DefWindowProc(hWnd, wMsg, wParam, lParam)
   End Function

   CallBack Function DlgProc
         Dim hFontC10 As Static Long, hDC As Long, i As Long
      Select Case CbMsg
         Case %WM_DESTROY
            DeleteObject hFontC10
         Case %WM_INITDIALOG
            Register_pbLabel
            
            pbLabel_Default_ForeColor = %WHITE
            pbLabel_Default_BackColor = %DlgColor
         
            hDC = GetDC(%HWND_DESKTOP)
            i  = GetDeviceCaps(hDC, %LOGPIXELSY)
            ReleaseDC %HWND_DESKTOP, hDC

            hFontC10 = CreateFont(0 - MulDiv(10, i, 72), 0, 0, 0, %FW_NORMAL, 0, 0, 0, _
               %RUSSIAN_CHARSET, %OUT_TT_PRECIS, %CLIP_DEFAULT_PRECIS, _
               %DEFAULT_QUALITY, %FF_DONTCARE, "Courier New")

  
            Control Add "pbLabel", CbHndl, 101, "Frame", 220, 10, 180, 110, %WS_CHILD Or %WS_VISIBLE Or %pbLabel_FRAME Or %SS_CENTER Or %WS_CLIPSIBLINGS ' <==============
            Control Add "pbLabel", CbHndl, 103, "Label-103", 10, 10, 200, 10, %WS_CHILD Or %WS_VISIBLE
            Control Add TextBox,   CbHndl, 104, "TextBox-102", 10, 22, 200, 14
            Control Add "pbLabel", CbHndl, 105, "Label-105", 230, 54, 160, 10, %WS_CHILD Or %WS_VISIBLE
            Control Add TextBox,   CbHndl, 106, "TextBox-106", 230, 66, 160, 14
            Control Add "pbLabel", CbHndl, 107, "Label-107", 230, 82, 160, 10, %WS_CHILD Or %WS_VISIBLE
            Control Add TextBox,   CbHndl, 108, "TextBox-108", 230, 94, 160, 14
            Control Add Button,    CbHndl, 109, "Button", 320, 135, 80, 15
        
            For i = 1 To 9
               Control Send CbHndl, 100 + i, %WM_SETFONT, hFontC10, 1
            Next
            
          '  Setwindowpos GetDlgItem(CbHndl, 101), GetDlgItem(CbHndl, 109), 0, 0, 0, 0, _
          '     %SWP_NOSIZE Or %SWP_NOMOVE Or %SWP_NOACTIVATE ' Aldo's suggestion

        End Select
   End Function

   Function PbMain
      Local hDlg As Long
      Dialog New 0, "", ,, 410, 200, %WS_CAPTION Or %WS_SYSMENU Or %WS_CLIPCHILDREN To hDlg
      Dialog Show Modal hDlg Call DlgProc
   End Function

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E-MAIL: [email protected]