GtkSharp/gdk/Region.custom

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// Gdk.Region.custom - Gdk Region class customizations
//
// Author: Joshua Tauberer <tauberer@for.net>
//
// (c) 2004 Joshua Tauberer
//
// This code is inserted after the automatically generated code.
[DllImport("libglib-2.0-0.dll")]
static extern void g_free (IntPtr mem);
[DllImport("libgdk-win32-2.0-0.dll")]
static extern void gdk_region_get_rectangles(IntPtr raw, out IntPtr rectangles, out int n_rectangles);
public Rectangle[] GetRectangles ()
{
int n;
IntPtr rectangles;
gdk_region_get_rectangles(Handle, out rectangles, out n);
Rectangle[] ret = new Rectangle[n];
int step = Marshal.SizeOf(typeof(Rectangle));
int ptr = (int)rectangles;
for (int i = 0; i < n; i++) {
ret[i] = (Rectangle)Marshal.PtrToStructure((IntPtr)ptr, typeof(Rectangle));
ptr += step;
}
g_free(rectangles);
return ret;
}