public bool MemoryCopyFrom(Dib dib)
{
if (this.Size != dib.Size)
{
return(false);
}
MoveMemory(this.pPtr, dib.pPtr, this.Size);
return(true);
}
public void DrawTo(Dib dib, int x, int y)
{
IntPtr hDispDC = IntPtr.Zero;
IntPtr hDibDC = IntPtr.Zero;
IntPtr hOldBmp = IntPtr.Zero;
try {
hDispDC = CreateDCW("DISPLAY", IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
if (hDispDC == IntPtr.Zero)
{
return;
}
hDibDC = CreateCompatibleDC(hDispDC);
if (hDibDC == IntPtr.Zero)
{
return;
}
hOldBmp = SelectObject(hDibDC, dib.hBmp);
DrawTo(hDibDC, x, y);
} finally {
if (hDispDC != IntPtr.Zero)
{
DeleteDC(hDispDC);
}
if (hDibDC != IntPtr.Zero)
{
if (hOldBmp != IntPtr.Zero)
{
SelectObject(hDibDC, hOldBmp);
}
DeleteDC(hDibDC);
}
}
}
public Dib Clone(int colorBits)
{
Dib dib = null;
IntPtr hDispDC = IntPtr.Zero;
IntPtr hSrcDC = IntPtr.Zero;
IntPtr hDstDC = IntPtr.Zero;
IntPtr hOldSrcBmp = IntPtr.Zero;
IntPtr hOldDstBmp = IntPtr.Zero;
try {
dib = new Dib();
if (!dib.Create(this.Width, this.Height, colorBits == 0 ? this.ColorBits : colorBits))
{
return(null);
}
hDispDC = CreateDCW("DISPLAY", IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
if (hDispDC == IntPtr.Zero)
{
return(null);
}
hSrcDC = CreateCompatibleDC(hDispDC);
if (hSrcDC == IntPtr.Zero)
{
return(null);
}
hDstDC = CreateCompatibleDC(hDispDC);
if (hDstDC == IntPtr.Zero)
{
return(null);
}
hOldSrcBmp = SelectObject(hSrcDC, this.hBmp);
hOldDstBmp = SelectObject(hDstDC, dib.hBmp);
BitBlt(hDstDC, 0, 0, this.Width, this.Height, hSrcDC, 0, 0, TernaryRasterOperations.SRCCOPY);
Dib tmp = dib;
dib = null;
return(tmp);
} finally {
if (dib != null)
{
dib.Dispose();
}
if (hDispDC != IntPtr.Zero)
{
DeleteDC(hDispDC);
}
if (hSrcDC != IntPtr.Zero)
{
if (hOldSrcBmp != IntPtr.Zero)
{
SelectObject(hSrcDC, hOldSrcBmp);
}
DeleteDC(hSrcDC);
}
if (hDstDC != IntPtr.Zero)
{
if (hOldDstBmp != IntPtr.Zero)
{
SelectObject(hDstDC, hOldDstBmp);
}
DeleteDC(hDstDC);
}
}
}
