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Flickering bitmap update
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Gernot Frisch
Jan 27, 2012, 6:49:20 PM1/27/12
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Hi,
the app in:
http://www.glbasic.com/beta/guitest.zip
does not flicker on my Win7 system at all. But as soon as I resize the
dialog, it flickers like crazy.
Can you tell me what I did wrong?
// Create dialog:
hwnd = ::CreateWindowExA(WS_EX_DLGMODALFRAME|WS_EX_COMPOSITED,
"GLBasicDialog", caption,
WS_THICKFRAME|WS_VISIBLE | WS_SYSMENU | WS_CAPTION | WS_OVERLAPPED |
WS_POPUP
| WS_CLIPSIBLINGS | WS_CLIPSIBLINGS
, x,y, w, h, NULL, 0, (HINSTANCE)::GetModuleHandleA(NULL), 0);
// Create bitmap static control
HWND hwnd = ::CreateWindowExA(0, "STATIC", "",
SS_CENTERIMAGE | SS_REALSIZEIMAGE | SS_BITMAP | SS_NOTIFY | WS_CHILD |
WS_VISIBLE | WS_BORDER,
0,0,10,10,
(HWND)parent, (HMENU)id, (HINSTANCE)::GetModuleHandleA(NULL), 0
// Update of the image:
SendMessageA((HWND)pW, STM_SETIMAGE, (WPARAM)0, (LPARAM)(*pBmp));
Bye,
-Gernot
the app in:
http://www.glbasic.com/beta/guitest.zip
does not flicker on my Win7 system at all. But as soon as I resize the
dialog, it flickers like crazy.
Can you tell me what I did wrong?
// Create dialog:
hwnd = ::CreateWindowExA(WS_EX_DLGMODALFRAME|WS_EX_COMPOSITED,
"GLBasicDialog", caption,
WS_THICKFRAME|WS_VISIBLE | WS_SYSMENU | WS_CAPTION | WS_OVERLAPPED |
WS_POPUP
| WS_CLIPSIBLINGS | WS_CLIPSIBLINGS
, x,y, w, h, NULL, 0, (HINSTANCE)::GetModuleHandleA(NULL), 0);
// Create bitmap static control
HWND hwnd = ::CreateWindowExA(0, "STATIC", "",
SS_CENTERIMAGE | SS_REALSIZEIMAGE | SS_BITMAP | SS_NOTIFY | WS_CHILD |
WS_VISIBLE | WS_BORDER,
0,0,10,10,
(HWND)parent, (HMENU)id, (HINSTANCE)::GetModuleHandleA(NULL), 0
// Update of the image:
SendMessageA((HWND)pW, STM_SETIMAGE, (WPARAM)0, (LPARAM)(*pBmp));
Bye,
-Gernot
Fred
Jan 29, 2012, 7:41:37 AM1/29/12
to
"Gernot Frisch" <m...@privacy.net> a écrit dans le message de news:
9ogrfv...@mid.individual.net...
> Hi,
> the app in:
> http://www.glbasic.com/beta/guitest.zip
> does not flicker on my Win7 system at all. But as soon as I resize the
> dialog, it flickers like crazy.
> Can you tell me what I did wrong?
exe tested on XP SP3 : it works fine and doesn't flicker at all on dialog
> the app in:
> http://www.glbasic.com/beta/guitest.zip
> does not flicker on my Win7 system at all. But as soon as I resize the
> dialog, it flickers like crazy.
> Can you tell me what I did wrong?
resizing...
Gernot Frisch
Jan 30, 2012, 5:51:07 AM1/30/12
to
>> http://www.glbasic.com/beta/guitest.zip
> exe tested on XP SP3 : it works fine and doesn't flicker at all on dialog
> resizing...
So it must be some Win7 "feature".
> resizing...
Deanna Earley
Jan 30, 2012, 6:05:59 AM1/30/12
to
On 27/01/2012 23:49, Gernot Frisch wrote:
> Hi,
>
> the app in:
> http://www.glbasic.com/beta/guitest.zip
>
> does not flicker on my Win7 system at all. But as soon as I resize the
> dialog, it flickers like crazy.
> Can you tell me what I did wrong?
>
> Hi,
>
> the app in:
> http://www.glbasic.com/beta/guitest.zip
>
> does not flicker on my Win7 system at all. But as soon as I resize the
> dialog, it flickers like crazy.
> Can you tell me what I did wrong?
>
> // Update of the image:
> SendMessageA((HWND)pW, STM_SETIMAGE, (WPARAM)0, (LPARAM)(*pBmp));
Do you not do any painting yourself?
> SendMessageA((HWND)pW, STM_SETIMAGE, (WPARAM)0, (LPARAM)(*pBmp));
That could be a better method, making sure you handle WM_PAINT and
invalidate the window to force a redraw.
--
Deanna Earley (dee.e...@icode.co.uk)
i-Catcher Development Team
http://www.icode.co.uk/icatcher/
iCode Systems
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