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  1. using System;
  2. using System.Drawing;
  3. using System.Runtime.InteropServices;
  4. using System.Windows.Forms;
  5.  
  6. namespace WindowsFormsApplication1
  7. {
  8.     public partial class Form1 : Form
  9. 	{
  10. 		[DllImport( "gdi32.dll" )]
  11. 		static extern int Rectangle( IntPtr hdc, int nLeftRect, int nTopRect, int nRightRect, int nBottomRect );
  12.  
  13. 		public Form1()
  14. 		{
  15. 			InitializeComponent();
  16. 		}
  17.  
  18. 		protected override void OnPaint( PaintEventArgs e )
  19. 		{
  20. 			// GDI+
  21. 			e.Graphics.FillRectangle( Brushes.Blue, new Rectangle( 0, 0, 50, 50 ) );
  22. 			e.Graphics.DrawRectangle( Pens.Red, new Rectangle( 0, 100, 50, 50 ) );
  23.  
  24. 			// GDI
  25. 			var hdc = e.Graphics.GetHdc();
  26. 			Rectangle( hdc, 0, 200, 50, 250 );
  27. 			e.Graphics.ReleaseHdc( hdc );
  28.  
  29. 			base.OnPaint( e );
  30. 		}
  31.  
  32. 		private void button1_Click( object sender, EventArgs e )
  33. 		{
  34. 			if( this.RightToLeft == System.Windows.Forms.RightToLeft.Yes )
  35. 			{
  36. 				this.RightToLeft = System.Windows.Forms.RightToLeft.No;
  37. 				this.RightToLeftLayout = false;
  38. 			}
  39. 			else
  40. 			{
  41. 				this.RightToLeft = System.Windows.Forms.RightToLeft.Yes;
  42. 				this.RightToLeftLayout = true;
  43. 			}
  44. 		}
  45. 	}
  46. }
  47.  
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https://ideone.com/CHbdZH
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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