Re: WM_PAINT NON-STOP IN CUSTOM CONTROL

From:

=?Utf-8?B?Um9iZXJ0?= <Robert@discussions.microsoft.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 22 Aug 2006 20:44:01 -0700

Message-ID:

<212C230A-0FA8-43E4-B95B-F372D9C1EB8E@microsoft.com>

Hello Fellas,

With that BeginPaint I have the constantly receiving WM_PAINT's stopped, but
instead of updating whole region when I draw an image, it updates the only
erased rectangles or doesn't update at all if there is no dirty areas, but
the background image already changed and I need it to be full updated!!..
Loading an image function sends just one message to that image win to
WM_UPDATE and the image win callback returns 0, no problem with that
function..
Sending the message func works Ok..

But without BeginPaint it was non-stop update, so I couldn't even move the
window!!

Then I placed Beep function, just to control when the image win receives
WM_UPDATE..

And then suddenly, I commented BeginPaint/End functions and just left only
Beep..

And again I began to hear that beep non-stop again (WM_UPDATE), BUT>>>!!!!!!

Image update and window moving was fine!!!!! it works now good, exactly how
it suppose to.

So, now I placed Beep (0,1) function and no sound and perfect work..

Of course I understand that's stupid and unwell, but what can I do..???

Any Idea??

/*************************************************************/
        case WM_PAINT:
// PAINTSTRUCT ps;
// BeginPaint(hwnd, &ps);
            Beep(0, 1);

            if (hImage != NULL)
            {
            HDC tmpDC;
            hdc = GetDC(hwnd);
            tmpDC = CreateCompatibleDC(hdc); //
            GetWindowRect(hwnd, &rct);
            SelectObject(tmpDC, hImage);

            BitBlt(hdc, 0, 0, rct.right, rct.bottom, tmpDC, 0, 0, SRCCOPY);

            DeleteDC(tmpDC);
            ReleaseDC(hwnd, hdc);
            }

// EndPaint(hwnd, &ps);
            return 0;