C / C++ / MFC

Dustin Henry wrote:

I comment out all of my code in the loop except the windows message queue processing and my app jumps from 60fps to about 2000fps.

LRESULT CALLBACK WindowProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{	 
	switch(msg)
	{	
		case WM_CREATE: 
		{  
			// do initialization stuff here
			// return success
			return(0);
		} 
		break;
		case WM_LBUTTONDOWN:
		{
			// get the position of the mouse
			POINT ptMouse = {(int)LOWORD(lParam),(int)HIWORD(lParam)};
			g_pInterface->UpdateMouse(ptMouse, true);
		}
		break;
		case WM_LBUTTONUP:
		{
			// get the position of the mouse
			POINT ptMouse = {(int)LOWORD(lParam),(int)HIWORD(lParam)};
			g_pInterface->UpdateMouse(ptMouse, false);
		}
		break;
		case WM_MOUSEMOVE:
		{
			// get the position of the mouse
			POINT ptMouse = {(int)LOWORD(lParam),(int)HIWORD(lParam)};
			g_pInterface->UpdateMouse(ptMouse);

			CString stMove;
			stMove.Format("(%d,%d)",(int)LOWORD(lParam),(int)HIWORD(lParam));
			//SetWindowText(g_hWND, stMove);
		}
		break;
		case WM_DESTROY: 
		{
			// kill the application, this sends a WM_QUIT message 
			PostQuitMessage(0);
			// return success
			return(0);
		} 
		break;
		case WM_GRAPHNOTIFY:
		{
			g_pInterface->GetDirectShow()->OnGraphEvent();
		}
		break;
		default:break;

	} // end switch
	// process any messages that we didn't take care of 
	return (DefWindowProc(hWnd, msg, wParam, lParam));
} // end WinProc

while(TRUE)
{
	// Get the time this function began executing
	//DWORD dwStartTime = GetTickCount();
	// test if there is a message in queue, if so get it
	if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
	{ 
		// test if this is a quit
		if (msg.message == WM_QUIT)
		   break;
		// translate any accelerator keys
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
		{
			TranslateMessage(&msg);
			// send the message to the window proc
			DispatchMessage(&msg);
		}
	} // end if
/* Other processing... */
}

Mark Salsbery wrote:

What do you mean by "fps"?

if (!g_bRunning)
	Sleep(1000);

while(GetMessage(&msg,NULL,0,0))
{	
	// translate any accelerator keys
	if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
	{
		TranslateMessage(&msg);
		// send the message to the window proc
		DispatchMessage(&msg);
	}
}

case WM_ACTIVATE:
{
   //See if we lost or gained focus
   if (LOWORD(wParam) == WA_ACTIVE)
   {
     g_bRunning = true;
   }
   else
   {
     g_bRunning = false;
   }
}
break;

static bool m_bRunning = true;

while(TRUE)
{
	// Get the time this function began executing
	//DWORD dwStartTime = GetTickCount();
	// test if there is a message in queue, if so get it
        do
        {
             if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
             { 
		// test if this is a quit
		if (msg.message == WM_QUIT)
		   break;
		// translate any accelerator keys
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
		{
			TranslateMessage(&msg);
			// send the message to the window proc
			DispatchMessage(&msg);
		}
	     } // end if
        } while(!m_bRunning)
 /* Other processing... */
}

wrote:

When i try to start the exe, is it possible for me to prompt to the user (using a message box) that the application connot run in this system (as it doesnot have VC++ 8.0 in it.

wrote:

Put it in simple words, I dont want my application to crash when I start it on another machine without the required dll's.