Re: [Dev-C++] C++ dialog control

[Kevin W. <ke...@me...>]

Hi everyone,

At 01:53 11/08/03, Chris Sroka wrote:

>I have created an OK pushbutton in a dialog box via a resource script (see 
>code below):
>
>****
>
>     DEFPUSHBUTTON   "Start", ID_START_CALC, 255, 7, 50, 14
>     DEFPUSHBUTTON   "OK", ID_OK, 255, 27, 50, 14
>     DEFPUSHBUTTON   "Cancel", ID_CANCEL, 255, 47, 50, 14
>****

There should only be one default button in a dialog box. Use PUSHBUTTON for 
the rest.

>I am trying to grey it out and disable it, from within a callback 
>function, while I carry out some calculations, and then enable it again 
>when the calcs are complete.

Buttons are windows, so you can send a message to the button to disable it, 
via the EnableWindow function:  EnableWindow(HWND hWnd, BOOL bEnable)
where hWnd is the window handle, and bEnable is set to FALSE to disable the 
window.

>Does anyone know how to do this? I have tried SendDlgItemMessage with the 
>dialog's handle, the pushbutton's ID and various LPARAMs and WPARAMs but 
>with no success. I have also trawled www.msdn.microsoft.com but found no 
>suggestions.

Do you have the Win32 SDK?

Regards,
         Kev.