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usage of Get/SetShellWindow() for registering desktop window; display desktop only, if there is not already another

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svn path=/trunk/; revision=5330
This commit is contained in:
Martin Fuchs 2003-07-30 16:44:43 +00:00
parent d2cd5c9398
commit 21ee9e011a
1 changed files with 44 additions and 6 deletions
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50
reactos/subsys/system/explorer/desktop.c
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@ -14,6 +14,10 @@
const TCHAR DesktopClassName[] = TEXT("DesktopWindow");
HWND (WINAPI*GetShellWindow)();
void (WINAPI*SetShellWindow)(HWND);
LRESULT CALLBACK DeskWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch(uMsg)
@ -21,7 +25,7 @@ LRESULT CALLBACK DeskWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
case WM_CLOSE :
{
// Over-ride close. We need to close desktop some other way.
return 0;
break;
}
case WM_PAINT :
@ -58,18 +62,43 @@ LRESULT CALLBACK DeskWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
EndPaint(hwnd, &ps);
return 0;
break;
}
case WM_LBUTTONDBLCLK:
ShowFileMgr(hwnd, SW_SHOWNORMAL);
return 0;
break;
case WM_DESTROY:
if (SetShellWindow)
SetShellWindow(0);
break;
default:
return DefWindowProc(hwnd, uMsg, wParam, lParam);
}
return DefWindowProc(hwnd, uMsg, wParam, lParam);
return 0;
}
BOOL IsAnyDesktopRunning()
{
POINT pt;
HINSTANCE shell32 = GetModuleHandle(TEXT("user32"));
GetShellWindow = (HWND(WINAPI*)()) GetProcAddress(shell32, "GetShellWindow");
SetShellWindow = (void(WINAPI*)(HWND)) GetProcAddress(shell32, "SetShellWindow");
if (GetShellWindow)
return GetShellWindow() != 0;
pt.x = 0;
pt.y = 0;
return WindowFromPoint(pt) != GetDesktopWindow();
}
int main(int argc, char *argv[])
{
@ -82,8 +111,14 @@ int main(int argc, char *argv[])
HINSTANCE hInstance = GetModuleHandle(NULL);
// create desktop window and task var only, if we are the first explorer instance
if (!find_window_class(DesktopClassName))
// create desktop window and task bar only, if there is no other shell and we are
// the first explorer instance (just in case SetShellWindow() is not supported by the OS)
BOOL startup_desktop = !IsAnyDesktopRunning() && !find_window_class(DesktopClassName);
if (argc>1 && !strcmp(argv[1],"-desktop"))
startup_desktop = TRUE;
if (startup_desktop)
{
HWND hwndExplorerBar;
@ -118,6 +153,9 @@ int main(int argc, char *argv[])
return 1; // error
}
if (SetShellWindow)
SetShellWindow(hwndDesktop);
// call winefile startup routine
GetStartupInfo(&startupinfo);