FlashWindowEx

Dody_DK

Why I can't use the FlashWindowEx() with MFC based dialog... it gives me that FlashWindowEx is not declared, any way to use it? thanks in advance...

PJ Arends

FlashWindowEx is declared in WinUser.h. If you open WinUser.h and do a text search for FlashWindowEx you will see that FlashWindowEx is wrapped in a pre-processor conditional statement "#if(WINVER >= 0x0500)". So to use FlashWindowEx you have to #define WINVER 0x0500 at the top of your stdafx.h file.

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Dody_DK

the problem is I don't have FlashWindowEx in the WinUser.h here is what I have FlashWindow( HWND hWnd, #if(WINVER >= 0x0500) DWORD dwFlags); #else BOOL bInvert); #endif #if(WINVER >= 0x0500) #define FLASHW_STOP 0 #define FLASHW_CAPTION 0x00000001 #define FLASHW_TRAY 0x00000002 #define FLASHW_ALL (FLASHW_CAPTION | FLASHW_TRAY) #define FLASHW_TIMER 0x00000004 #define FLASHW_TIMERNOFG 0x0000000C #endif /* WINVER >= 0x0500 */ any help with it? thanks....

Gavin Taylor

You've probobly still got a REALLY old version of the platform SDK, you've got two options, either download[^] the latest version or access the FlashWindowEx function on the fly using GetProcAddress[^]. If you choose the later option, you'll need something like:

/* Taken from the MSDN website*/
typedef struct {
UINT cbSize;
HWND hwnd;
DWORD dwFlags;
UINT uCount;
DWORD dwTimeout;
} FLASHEXINFO, *PFLASHEXINFO;

#define FLASHW_STOP 0
#define FLASHW_CAPTION 0x00000001
#define FLASHW_TRAY 0x00000002
#define FLASHW_ALL (FLASHW_CAPTION | FLASHW_TRAY)
#define FLASHW_TIMER 0x00000004
#define FLASHW_TIMERNOFG 0x0000000C

typedef BOOL (WINAPI *PSFLEX)(PFLASHEXINFO);

static PSFLEX pFlashWindowEx = NULL; // Pointer to actual function
static BOOL initFlash = FALSE; // Loaded status

BOOL uiFlashWindowEx( HWND hWnd, UINT uCount /* Flash Count */, DWORD dwFlags /* check SDK */ )
{
if ( ! initFlash )
{ // Not loaded yet
HMODULE hDLL = NULL;
hDLL = LoadLibrary( TEXT( "user32.dll" ) );
if( hDLL )
{
pFlashWindowEx = ( PSFLEX ) GetProcAddress( hDLL, "FlashWindowEx" );
initFlash = TRUE; // Loaded OK
}
}

if ( pFlashWindowEx == NULL ) 
	return FALSE; // Not Supported

FLASHEXINFO fwi;
ZeroMemory( & fwi, sizeof( FLASHEXINFO ) );
fwi.cbSize = sizeof( FLASHEXINFO );
fwi.dwFlags = dwFlags;
fwi.hwnd = hWnd;
fwi.uCount = uCount;
fwi.dwTimeout = 0L;
return pFlashWindowEx ( & fwi );

}

Once done, just use uiFlashWindowEx( hWnd, 3, FLASHW_TRAY ); or whatever Gavin Taylor w: http://www.gavspace.com -- modified at 12:37 Tuesday 3rd January, 2006

Dody_DK

thanks alot, I download the last PSDK and linked the vc++ compilter to the new dorectories, and it works great now, thanks alot...