WM_STLCOLORxxx

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zhak

Joined: 12 Apr 2005
Posts: 501
Location: Belarus

zhak 24 Apr 2005, 08:06

How to use these messages? I tried to CreateBrushIndirect and then InvalidateRect the whole dialog while in WM_INITDIALOG.
Then in WM_CTLCOLORxxx I use SetBkMode and SetBkColor, and pass a handle to the brush (created by CreateBrushIndirect) to eax before return.

When initializing LOGBRUSH struct I use:
mov [lb.lbStyle], BS_SOLID
mov [lb.lbColor], 0000FF00h
push lb
call [CreateBrushIndirect]

What am I doing wrong?

24 Apr 2005, 08:06

zhak

Joined: 12 Apr 2005
Posts: 501
Location: Belarus

zhak 24 Apr 2005, 11:20

I've got it.
After passing a brush handle to eax I did jump to .retp: label, where

.retp:
mov eax, 1
return

so eax register with the brush handle was simply overwritten.
It's just a lack of attention

24 Apr 2005, 11:20

Vasilev Vjacheslav

Joined: 11 Aug 2004
Posts: 392

Vasilev Vjacheslav 25 Apr 2005, 10:41

my method:
1. create brush:

Code:

        invoke  GetSysColor,COLOR_BTNFACE
        invoke  CreateSolidBrush,eax
        or      eax,eax
        jz      @F
        mov     [hBackBrushLogo],eax
  @@:

2. in window proc catch WM_CTLCOLORxxx message:

Code:

        cmp     ax,WM_CTLCOLORSTATIC
        jz      .colordlg

3. at .colordlg i check some values and then paint:

Code:

        invoke  GetDlgItem,[hWnd],ID_STLOGO
        or      eax,eax
        jz      .not_processed

        cmp     [lParam],eax
        jnz     .not_processed

        cmp     [hBackBrushLogo],NULL
        jz      .not_processed

        invoke  SetBkMode,[wParam],TRANSPARENT
        invoke  GetSysColor,COLOR_BTNSHADOW
        invoke  SetTextColor,[wParam],eax
        mov     eax,[hBackBrushLogo]
        jmp     .finish

25 Apr 2005, 10:41

Vasilev Vjacheslav

Joined: 11 Aug 2004
Posts: 392

Vasilev Vjacheslav 25 Apr 2005, 10:42

4. don't forget to free brush object when WM_CLOSE is sent:

Code:

        cmp     [hBackBrushLogo],NULL
        jz      @F
        invoke  DeleteObject,[hBackBrushLogo]
  @@:

25 Apr 2005, 10:42

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