Thread: The modal dialog box problem

It's a problem i don't know how to get around

When I create the modal dialog box, the owner window (main application widnow in my case) no longer receives any messages instead, the modal dialog box's message loops begins, so all the drawings I did in WM_PAINT no longer get drawn and I get an error.

The reason of this error i think is that since the window isn't getting any messages, the HDC in it isn't valid any more and that's why i get an error for the drawings in WM_PAINT


is there any function to freeze a window? to keep it in an idle state with all the information in it and receive no message until an opposite function is called ?

If i can do this, I will call this function before creating the modal dialog so i wont get the error of drawing



P.S.: Message boxes also cause the same thing, because there are also modal dialog boxes

Post you drawing code for the main window. It could be an error there. Are you using a memory DC?

You could also use a modeless dialog (as you don't state the need for modal).

there is no error in drawing because without the modal dialog box it goes completely normal

this is my drawing code.... i don't think there is any point in this because it's flawless and i'm sure of it as i stated above

Code:

HDC               hdc;
PAINTSTRUCT ps;

case WM_PAINT:
      hdc = BeginPaint(hwnd, &ps);
      pGame->draw_game(hdc);
      EndPaint(hwnd, &ps);
      break;

little update. i tried to cancel the WM_PAINT and do the drawing by GetDC and ReleaseDC

but the same thing happens ;(

any help ;( ?

My modal dlgs do not have any issues with drawing, nor do thier parents.


You have not been descriptive enough in your original question nor have you posted code.

Your paint references a non standard function. I have no idea if this is failing.

You may not be using a memory DC.

I can see you have an un-optimised paint function that will slow your app down (you paint the whole screen even if only a tiny area needs a repaint).