I want to change the background colour of a ComboBox control.

For static and edit controls this can easily be done by handling the WM_CTLCOLORSTATIC or WM_CTLCOLOREDIT messages. But I don't know what to use for a ComboBox. WM_CTLCOLORLISTBOX doesn't work and a search hasn't turned up much of any use.

Any help appreciated please.

Z

there is also WM_CTLCOLORBTN WM_CTLCOLORSCROLLBAR maybe one this works...

i also found this:

http://www.asmcommunity.net/board/index.php?topic=7620.0

http://www.asmcommunity.net/board/index.php?topic=6324.0

so maybe WM_CTLCOLORLISTBOX must work?

Edited April 11, 200619 yr by diablo2oo2

Thanks diablo

Finally go it working with some trial and error.

Since a ComboBox has 2 parts - EditControl and DropDownList both need to be handled separately.

in the main windows message processing you need to

process the EDITCONTROL part of the ComboBox

.elseif uMsg==WM_CTLCOLOREDIT

mov eax, lParam

.if eax==hComboSelect ; ComboBox handle

invoke SetBkMode,wParam,TRANSPARENT; Background of Edit Text

RGB 0,0,0 ; black background or whatever color you want

invoke SetBkColor, wParam, eax

RGB TextRed, TextGreen, TextBlue ;eax = Text colour

invoke SetTextColor,wParam, eax ;set TextColor

invoke GetStockObject,NULL_BRUSH ;return a brush

ret

.endif

and you need to subclass the ComboBox control and process the WM_CTLCOLORLISTBOX

for the drop down list

.if uMsg==WM_CTLCOLORLISTBOX

invoke SetBkMode,wParam,TRANSPARENT ;Background of list Text

RGB TextRed, TextGreen, TextBlue ;eax = Text colour

invoke SetTextColor,wParam, eax ;set TextColor

invoke CreateSolidBrush, 00h ; black brush or whatever color you want

ret

.endif

Hope someone else finds this useful one day.

Z

good job ziggy. i posted your code to the winasm board.

http://www.asmcommunity.net/board/index.ph...79465#msg179465