/// <include file='doc\IDeviceContext.uex' path='docs/doc[@for="DeviceContext.GetHdc"]/*' />
/// <devdoc>
/// Explicit interface method implementation to hide them a bit for usability reasons so the object is seen
/// as a wrapper around an hdc that is always available, and for performance reasons since it caches the hdc
/// if used in this way.
/// </devdoc>
IntPtr IDeviceContext.GetHdc()
{
if (this.hDC == IntPtr.Zero)
{
Debug.Assert(this.dcType == DeviceContextType.Display, "Calling GetDC from a non display/window device.");
// Note: for common DCs, GetDC assigns default attributes to the DC each time it is retrieved.
// For example, the default font is System.
this.hDC = IntUnsafeNativeMethods.GetDC(new HandleRef(this, this.hWnd));
#if TRACK_HDC
Debug.WriteLine(DbgUtil.StackTraceToStr(String.Format("hdc[0x{0:x8}]=DC.GetHdc(hWnd=0x{1:x8})", unchecked ((int)this.hDC), unchecked ((int)this.hWnd))));
#endif
}
return(this.hDC);
}