MOVEMOUSE event!

[Cung2_91]

Env: Win32 (Visual C++)

I'm using WM_MOUSEMOVE to change a button (using STATIC with SS_BITMAP) so that when the mouse is hovering at the button it change from Default.bmp to Hover.bmp. I manage to compile and the program is running, but the button doesn't change sometime.

Any solution and hel, will be great. Thanks.

P.S Sorry for my bad english

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	flashMWindow.cbSize = sizeof(flashMWindow);
	flashMWindow.dwFlags = FLASHW_ALL;
	flashMWindow.dwTimeout = 250;
	flashMWindow.hwnd = hWnd;
	flashMWindow.uCount = 4;	

	static BOOL  Click, BtnConnectClick, BtnConnectHover, BtnConnectChange;
	
	switch (message)
	{
	case WM_CREATE:
		FlashWindowEx(&flashMWindow);
		ConnectionButton = 	CreateWindowEx (NULL, _T("STATIC"), TEXT (""),
							WS_CHILD | WS_VISIBLE | SS_NOTIFY | SS_BITMAP,
							10, 400, 140, 40,
							hWnd, (HMENU) IDC_CONNECTION, GetModuleHandle(NULL), NULL) ;
		LoadImage();
		InvalidateRect(hWnd,NULL,true);
		break;
	/*
	case WM_LBUTTONDOWN :
		if ((LOWORD(lParam)>=10)&&(LOWORD(lParam)<=150)&&(HIWORD(lParam)>=400)&&(HIWORD(lParam)<=440))
		{
			BtnConnectClick = TRUE;
		}
		else
		{
			BtnConnectClick = FALSE;
		}
        Click = TRUE ;
        InvalidateRect(hWnd,NULL,false);
		break;
	*/
	case WM_MOUSEMOVE:
		if ((LOWORD(lParam)>=10)&&(LOWORD(lParam)<=150)&&(HIWORD(lParam)>=400)&&(HIWORD(lParam)<=440))
		{
			BtnConnectHover = TRUE;
		}
		else
		{
			BtnConnectHover = FALSE;
		}
		tme.cbSize = sizeof(tme); 
        tme.dwFlags = TME_LEAVE; 
        tme.hwndTrack = hWnd; 
        TrackMouseEvent(&tme); 
		InvalidateRect(hWnd,NULL,false);
        return 0;
	/*
	case WM_LBUTTONUP :
		if (Click)
        {
			if ((LOWORD(lParam)>=10)&&(LOWORD(lParam)<=150)&&(HIWORD(lParam)>=400)&&(HIWORD(lParam)<=440))
			{
				if (BtnConnectClick)
				{
					BtnConnectChange = 1;
					if (Connection == Disconnect) 
					{
						Connection = Connect;
					} 
					else 
					{
						Connection = Disconnect;
					}
				}
			}
        }
		Click = FALSE;
		InvalidateRect (hWnd, NULL, TRUE);
        break;
	*/
	case WM_COMMAND:
		switch (LOWORD(wParam))
		{
			case IDC_CONNECTION:
				if (Connection == Disconnect) 
				{
					Connection = Connect;
				} 
				else 
				{
					Connection = Disconnect;
				}
				break;
		}
		InvalidateRect(hWnd,NULL,false);
		break;
	case WM_KEYDOWN:
		{	
			if (wParam == VK_ESCAPE)
			{
				int ret = MessageBox(NULL, TEXT("Are you sure to quit?"), TEXT("Message"), MB_OKCANCEL);
				if ( ret == IDOK)
				{
					SendMessage(hWnd, WM_CLOSE, 0, 0);
				}
			}
		break;
		}
	case WM_PAINT:
		hDC = BeginPaint(hWnd, &ps);
		// TODO: Add any drawing code here...
		MemDC = CreateCompatibleDC(hDC);
		SelectObject(MemDC,bmp[0]);
		BitBlt(hDC,0,0,800,450,MemDC,0,0,SRCCOPY);
		DeleteDC(MemDC);
		EndPaint(hWnd, &ps);
		//Paint Connection Button
		if(BtnConnectHover == FALSE)
		{
			if (Connection == 0)
				{
				cn = 1;
				}
			else
				{
				cn = 3;
				}
		}
		if(BtnConnectHover == TRUE)
		{
			if (Connection == 0)
			{
				cn = 2;
			}
			if (Connection == 1)
			{
				cn = 4;
			}
		}
		hDC = BeginPaint(ConnectionButton, &ps);
		MemDC = CreateCompatibleDC(hDC);
		SelectObject(MemDC,bmp[cn]);
		BitBlt(hDC,0,0,140,40,MemDC,0,0,SRCCOPY);
		DeleteDC(MemDC);
		EndPaint(ConnectionButton, &ps);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	UNREFERENCED_PARAMETER(lParam);
	switch (message)
	{
	case WM_INITDIALOG:
		return (INT_PTR)TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
		{
			EndDialog(hDlg, LOWORD(wParam));
			return (INT_PTR)TRUE;
		}
		break;
	}
	return (INT_PTR)FALSE;
}

void LoadImage() 
{
	bmp[0]=LoadBitmap(hInst,MAKEINTRESOURCE(IDB_BG));
	bmp[1]=LoadBitmap(hInst,MAKEINTRESOURCE(IDB_DefaultConnect));
	bmp[2]=LoadBitmap(hInst,MAKEINTRESOURCE(IDB_HoverConnect));
	bmp[3]=LoadBitmap(hInst,MAKEINTRESOURCE(IDB_DefaultDisconnect));
	bmp[4]=LoadBitmap(hInst,MAKEINTRESOURCE(IDB_HoverDisconnect));
}

[MikeAThon]

You are painting on the child window (i.e., the static window) from the WM_PAINT of the parent. That's usually poor practice; the child window should do all of its own painting, in response to WM_PAINT messages sent to the child.

In addition, you are calling BeginPaint and EndPaint twice. They should be called only once in any one WM_PAINT procedure.

Mike

[Cung2_91]

Thx Mike, it's all done now.

Julius

[Igor Vartanov]

Env: Win32 (Visual C++)

I'm using WM_MOUSEMOVE to change a button (using STATIC with SS_BITMAP)

STM_SETIMAGE message