Print Page - WM_CTLCOLOREDIT problem

Title: WM_CTLCOLOREDIT problem
Post by: jj2007 on May 05, 2010, 03:07:19 PM

I am stuck with a misbehaving WM_CTLCOLOREDIT handler for a matrix of edit boxes. It should set an edit control's text colour and background, and it does so if I select the editbox by hand.
However, when the whole matrix is being created/updated, the boxes all have the same colours.
All boxes are subclassed and share the same subclassing procedure; the handler is in the main WndProc.

For testing, cells A0, B0, C0 and A1 have colour attributes set. Tab moves to the next cell, Shift Tab to the previous one.

Code Select


SWITCH uMsg
CASE WM_CTLCOLOREDIT
	mov eax, lParam		; the handle to the edit control
	.if eax!=hCellShow		; all controls except hCellShow
		call seFindHandle	; will always find the correct offset
		.if signed ecx>=0
			mov ebx, [EditAtts+4*ecx]	; attribute flags
			and ebx, 3
			.if Zero?
				invoke SetTextColor, wParam, 0FF0000h
			.else
				invoke SetTextColor, wParam, 000FF00h
			.endif
			invoke SetBkColor, wParam, EditBgrd[4*ebx]
			invoke SetBkMode, wParam, TRANSPARENT
			inc ccEd
			return hBrushes[4*ebx]
		.endif
	.endif

Title: Re: WM_CTLCOLOREDIT problem
Post by: Ficko on May 05, 2010, 03:30:39 PM

What about doing something like that?:

Code Select


.const
FGRND	db 'FGRND',0
BGRND 	db 'BGRND',0
BBRUSH 	db 'BBRUSH',0
....
...
..
.code
...
..
.
mov ecx, [esi].WINDOW.hWnd
invoke GetDlgItem, ecx,id
.if (eax != 0)
	xchg	eax, edi
	invoke SetPropA, edi,offset FGRND,fg
	invoke SetPropA, edi,offset BGRND,bg
	invoke GetPropA, edi,offset BBRUSH 
	xchg	eax, esi
	invoke CreateSolidBrush,bg
	invoke SetPropA, edi,offset BBRUSH,eax
	.if (esi != 0)
		invoke DeleteObject, esi
	.endif
	invoke InvalidateRect, edi,0,1
.endif

Title: Re: WM_CTLCOLOREDIT problem
Post by: jj2007 on May 05, 2010, 04:58:14 PM

Thanks, Ficko. However, I would like to know why the official method doesn't work. Besides, I have to draw 400+ edit controls on the fly...

EDIT: Bug chasing half way successful. Will keep you posted...

Title: Re: WM_CTLCOLOREDIT problem
Post by: qWord on May 05, 2010, 07:11:56 PM

hi jj,
Olly shows me, that you proc past the color red only at start up to SetBkColor. When clicking to on an edit you are passing 0fffffh (white!) to SetBkColor.

Title: Re: WM_CTLCOLOREDIT problem
Post by: jj2007 on May 05, 2010, 08:27:24 PM

Thanks qWord. In the meantime, I found the culprit:

Quotecall seFindHandle ; will not always find the correct offset

A bloody stupid bug - seFindHandle called GetFocus instead of using the passed eax...

Now it works. Click into one of the grey row buttons on the left, and the whole row will be displayed yellowish.

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General Forums => The Workshop => Topic started by: jj2007 on May 05, 2010, 03:07:19 PM