ASM Community

Hi guys,

I have a dialog, it is compiled into the app as a resource, and i have no problem loading it and killing it (i use CreateDialogParam to load it in when the 'F2' key has been pressed).

However, i have 3 edit boxes on that dialog. Once the dialog is showing, i would like to set the background of the edit boxes to a custom color, and put a single letter in each one. How should i go about this? Can i set the backcolor of a edit box, or should i use a richedit? Also, the SendDlgItemMessage call in my dlgWndProc causes an unhandled exception, is this because the edit box (resource id #1001) hasn't been created yet?

If you can answer this, pseudo code is fine. Below is what code i have so far:

In my WndProc, the handler for the 'F2' key:
--------------------------------------------------------
.ELSEIF uMsg == WM_KEYUP
.IF wParam == VK_F2
invoke CreateDialogParam, hInstance, 101, masterHwnd, ADDR dlgWndProc, 0
.IF !eax
invoke GetLastError
.ELSE
invoke ShowWindow, m_hWnd, SW_SHOW
.ENDIF
.ENDIF

and here is the code from my dlgWndProc:
------------------------------------------------
dlgWndProc proc m_hWnd:HWND, uMsg:UINT, wParam:WPARAM, lParam:LPARAM

.IF uMsg == WM_INITDIALOG
invoke SendDlgItemMessage, m_hWnd, 1001, WM_SETTEXT, FALSE, addr g_sLETTER_A
ret

.ELSEIF uMsg == WM_COMMAND
mov ebx, wParam
.IF bx == IDCANCEL
invoke DestroyWindow, m_hWnd
ret
.ENDIF
.ENDIF

mov eax, FALSE
ret
dlgWndProc endp

the text set during create is ok, fix the things told by KetilO,
to set the backcolor, you must respond in the dialog to the
WM_CTLCOLOREDIT and set the color to the given hdc.