[XAML]
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApplication2"
Title="MainWindow" Height="350" Width="525" AllowDrop="True"><Grid AllowDrop="True" x:Name="mainGrd"><Grid Height="246" HorizontalAlignment="Left" AllowDrop="True"
Margin="23,31,0,0" Name="grid1" VerticalAlignment="Top"
Width="432" ShowGridLines="True" /><Button Content="Button" Height="23" HorizontalAlignment="Left"
Margin="190,108,0,0" Name="button1" VerticalAlignment="Top"
Width="75"/></Grid></Window>[C#]
public partial class MainWindow : Window
{
double m_MouseX;
double m_MouseY;
public MainWindow()
{
InitializeComponent();
button1.PreviewMouseUp += new MouseButtonEventHandler(button1_MouseUp);
button1.PreviewMouseLeftButtonDown += new MouseButtonEventHandler(button1_MouseLeftButtonUp);
button1.PreviewMouseMove += new MouseEventHandler(button1_MouseMove);
}
private void button1_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
m_MouseX = e.GetPosition(this).X;
m_MouseY = e.GetPosition(this).Y;
}
private void button1_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
e.MouseDevice.Capture(button1);
System.Windows.Thickness _margin = new System.Windows.Thickness();
int _tempX = Convert.ToInt32(e.GetPosition(this).X);
int _tempY = Convert.ToInt32(e.GetPosition(this).Y);
_margin = mainGrd.Margin;
if (m_MouseX > _tempX)
{
_margin.Left += (_tempX - m_MouseX);
_margin.Right -= (_tempX - m_MouseX);
}
else
{
_margin.Left -= (m_MouseX - _tempX);
_margin.Right -= (_tempX - m_MouseX);
}
if (m_MouseY > _tempY)
{
_margin.Top += (_tempY - m_MouseY);
_margin.Bottom -= (_tempY - m_MouseY);
}
else
{
_margin.Top -= (m_MouseY - _tempY);
_margin.Bottom -= (_tempY - m_MouseY);
}
mainGrd.Margin = _margin;
m_MouseX = _tempX;
m_MouseY = _tempY;
}
}
private void button1_MouseUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
e.MouseDevice.Capture(null);
}
}