All,
I need to call a GDI32.DLL function called GetBitmapBits, whose last
parameter is specified as void*. To import the function, I have the
following:
[DllImport("gdi32.dll")]
static extern long GetBitmapBits(
IntPtr hbmp,
long cbBuffer,
[Out] IntPtr pData
);
How do I go about calling this? Do I use Marshal.AllocHGlobal to allocate
a memory buffer? Do I need to resort to unsafe calls?
Any help appreciated. Thanks.
John
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