using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Interop;
using System.Runtime.InteropServices;
namespace ResizableWindow
{
/// <summary>
/// Interaction logic for Window1.xaml
/// </summary>
public partial class Window1 : Window
{
private const int WM_SYSCOMMAND = 0x112;
private HwndSource hwndSource;
private enum ResizeDirection
{
Left = 61441,
Right = 61442,
Top = 61443,
TopLeft = 61444,
TopRight = 61445,
Bottom = 61446,
BottomLeft = 61447,
BottomRight = 61448,
}
[DllImport( "user32.dll", CharSet = CharSet.Auto )]
private static extern IntPtr SendMessage( IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam );
public Window1()
{
SourceInitialized += Window1_SourceInitialized;
InitializeComponent();
}
private void Window1_SourceInitialized( object sender, EventArgs e )
{
hwndSource = PresentationSource.FromVisual( (Visual)sender ) as HwndSource;
}
private void ResizeWindow( ResizeDirection direction )
{
SendMessage( hwndSource.Handle, WM_SYSCOMMAND, (IntPtr)direction, IntPtr.Zero );
}
protected void ResetCursor( object sender, MouseEventArgs e )
{
if( Mouse.LeftButton != MouseButtonState.Pressed )
{
this.Cursor = Cursors.Arrow;
}
}
protected void Resize( object sender, MouseButtonEventArgs e )
{
var clickedShape = sender as Shape;
switch( clickedShape.Name )
{
case "ResizeN":
this.Cursor = Cursors.SizeNS;
ResizeWindow( ResizeDirection.Top );
break;
case "ResizeE":
this.Cursor = Cursors.SizeWE;
ResizeWindow( ResizeDirection.Right );
break;
case "ResizeS":
this.Cursor = Cursors.SizeNS;
ResizeWindow( ResizeDirection.Bottom );
break;
case "ResizeW":
this.Cursor = Cursors.SizeWE;
ResizeWindow( ResizeDirection.Left );
break;
case "ResizeNW":
this.Cursor = Cursors.SizeNWSE;
ResizeWindow( ResizeDirection.TopLeft );
break;
case "ResizeNE":
this.Cursor = Cursors.SizeNESW;
ResizeWindow( ResizeDirection.TopRight );
break;
case "ResizeSE":
this.Cursor = Cursors.SizeNWSE;
ResizeWindow( ResizeDirection.BottomRight );
break;
case "ResizeSW":
this.Cursor = Cursors.SizeNESW;
ResizeWindow( ResizeDirection.BottomLeft );
break;
default:
break;
}
}
protected void DisplayResizeCursor( object sender, MouseEventArgs e )
{
var clickedShape = sender as Shape;
switch( clickedShape.Name )
{
case "ResizeN":
case "ResizeS":
this.Cursor = Cursors.SizeNS;
break;
case "ResizeE":
case "ResizeW":
this.Cursor = Cursors.SizeWE;
break;
case "ResizeNW":
case "ResizeSE":
this.Cursor = Cursors.SizeNWSE;
break;
case "ResizeNE":
case "ResizeSW":
this.Cursor = Cursors.SizeNESW;
break;
default:
break;
}
}
protected void DragWindow( object sender, MouseButtonEventArgs e )
{
DragMove();
}
}
}
