public static SafeDC CreateCompatibleDC(SafeDC hdc)
{
SafeDC dc = null;
try
{
var hPtr = IntPtr.Zero;
if (hdc != null)
{
hPtr = hdc.handle;
}
dc = NativeMethods.CreateCompatibleDC(hPtr);
if (dc == null)
{
HRESULT.ThrowLastError();
}
}
finally
{
if (dc != null)
{
dc._created = true;
}
}
if (dc.IsInvalid)
{
dc.Dispose();
throw new SystemException("Unable to create a device context from the specified device information.");
}
return dc;
}
public static extern int GetDeviceCaps(SafeDC hdc, DeviceCap nIndex);
