Windows 7 - SHAppBarMessage under windows7

Asked By 4N

28-Dec-09 01:05 PM

Hi,

I have lately tried an application of mine under windows 7and I found out that
I cannot remove the attribute ABS_ALWAYSONTOP to the taskbar.
How can I make a fullscreen application like WMP then?

Thanks in advance for any help.

01-Jan-10 10:18 AM

If you resize your application window so that it fills the whole screen
then Windows will make sure it appears above the taskbar.

- Jim

02-Jan-10 12:55 PM

I tried:

SetWindowPos(Handle, HWND_TOP, 0, 0,1680, 1050,
SWP_FRAMECHANGED|SWP_DRAWFRAME);
ShowWindow(Handle,SW_SHOW);

and using the handle of the taskbar as well

HWND hWnd = FindWindow(TEXT("Shell_TrayWnd"), NULL);
SetWindowPos(Handle, hWnd,...);

The window keeps resizing down to an height of 1020

02-Jan-10 02:05 PM

Make sure that the window does not have the WS_THICKFRAME style.

- Jim

02-Jan-10 02:18 PM

Not working, sorry. Code:

g_WndStyleBak = GetWindowLongPtr(Handle,GWL_STYLE);
g_WndExStyleBak = GetWindowLongPtr(Handle,GWL_EXSTYLE);
SetWindowLongPtr(Handle,GWL_STYLE,g_WndStyleBak&(~(WS_DLGFRAME|WS_BORDER|WS_THICKFRAME)));
if(SetWindowLongPtr(Handle,GWL_EXSTYLE,WS_MAXIMIZE)==0) GetLastError(); //
with or without this line it is the same: not working

SetWindowPos(Handle, HWND_TOP,...);
ShowWindow(Handle,SW_SHOW);

02-Jan-10 03:40 PM

Well, I tried it with a fixed-size dialog and also with a normal frame
window with the WS_THICKFRAME style removed, and it worked fine in both
cases.

Using Visual Studio 2005, I created a new project of type "MFC
Application" keeping all the default settings. In MainFrm.cpp, at the
end of CMainFrame::OnCreate (just before the return statement), I added
the following code:

CRect r;
GetDesktopWindow()->GetClientRect(&r);
ModifyStyle(WS_THICKFRAME, 0);
MoveWindow(&r);

Works fine for me. Does it work for you?

- Jim

02-Jan-10 04:05 PM

4N schrieb:
WS_MAXIMIZE is not an extended window style.

Timo
--
www.TimoSoft-Software.de - Unicode controls for VB6
??berzeugung, dass die demokratischen Kr??fte ??berwiegen und sich ??? auf
demokratischem Wege ??? durchsetzen."

03-Jan-10 07:50 AM

Using visual studio and mfc your example does work, so now I have to find
out why it does not work under c++ builder 2010.
Thanks a lot for your support.

03-Jan-10 07:51 AM

you are right, my bad.
Thanks for pointing it out.