C#

private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
	this.graphics = e.Graphics;
}

[DllImport("User32.Dll")]
public static extern IntPtr GetSystemMenu(int hWnd, bool bRevert);

private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
	//Obtain the handle to the form's title  bar
	IntPtr hTitle = GetSystemMenu(this.Handle, false);
	
	this.graphics = Graphics.FromHwnd(hTitle);
	
}

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// Initial value
uint a = UInt32.MaxValue;
Console.WriteLine("a = {0}", a);

// cast to int
int b = (int)a;
Console.WriteLine("b = {0}", b);

// cast to int with an System.OverFlowException if out of range
int c = checked((int)a);
Console.WriteLine("c = {0}", c);

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