C# Signature:

[DllImport("user32.dll")]
static extern int FillRect(IntPtr hDC, [In] ref RECT lprc, IntPtr hbr);

User-Defined Types:

public struct RECT

{

    public int x1;
    public int y1;
    public int x2;
    public int y2;

}

Notes:

None.

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Sample Code:

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Alternative Managed API:

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