private void WmPaint(ref Message m)
{
// Create a wrapper for the Handle
HandleRef myHandle = new HandleRef(this, Handle);
// Prepare the window for painting and retrieve a device context
NativeMethods.PAINTSTRUCT pAINTSTRUCT = new NativeMethods.PAINTSTRUCT();
IntPtr hDC = UnsafeNativeMethods.BeginPaint(myHandle, ref pAINTSTRUCT);
try
{
// Apply hDC to message
m.WParam = hDC;
// Let Windows paint
base.WndProc(ref m);
// Custom painting
PaintPrivate(hDC);
}
finally
{
// Release the device context that BeginPaint retrieved
UnsafeNativeMethods.EndPaint(myHandle, ref pAINTSTRUCT);
}
}
internal static extern bool EndPaint(HandleRef hWnd, ref NativeMethods.PAINTSTRUCT lpPaint);
internal static extern IntPtr BeginPaint(HandleRef hWnd, [In][Out] ref NativeMethods.PAINTSTRUCT lpPaint);
