I am attempting to use memory DCs in a game I am writting, but all the DC ever contains is blank. Heres my code:
VB Code:
Public Function GenerateDC(FileName As String) As Long Dim DC&, hBitmap& 'Create a Device Context, compatible with the screen DC = CreateCompatibleDC(0) If DC < 1 Then 'Check for errors, if there was one, exit the function GenerateDC = 0 Exit Function End If 'Load the image.... hBitmap = LoadImage(0, FileName, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE Or LR_CREATEDIBSECTION) If hBitmap = 0 Then 'Failure in loading bitmap DeleteDC DC GenerateDC = 0 Exit Function End If 'Assign the Bitmap to the Device Context SelectObject DC, hBitmap 'Return the device context GenerateDC = DC 'Delete the bitmap handle object DeleteObject hBitmap End Function Public Function DeleteGeneratedDC(DC As Long) As Long If DC > 0 Then 'Check if a vailid DC was sent (greater then 0) DeleteGeneratedDC = DeleteDC(DC) Else DeleteGeneratedDC = 0 End If End Function Public Sub LoadGraphics() Dim lngCurrDC&, lngTempDC&, strTmpFileN$ Dim Width&, Height&, FNum%, tmpS$, tmpA$(), X&, Y& strTmpFileN = GetTemporaryFilename FNum = FreeFile 'Cities Cities = GenerateDC(AppFolder & GraphicsFolder & "\Cities" & GraphicsExt) BitBlt frmMain.Picture1.hdc, 0, 0, 675, 648, Cities, 0, 0, vbSrcCopy frmMain.Picture1.Refresh End Sub


