wpf无边框窗体移动和大小调整

using System;
using System.Windows;
using System.Windows.Interop;namespace Wpftest
{
public partial class MainWindow : Window
{
public MainWindow()
{
this.InitializeComponent(); // 在此点下面插入创建对象所需的代码。
} protected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
HwndSource hwndSource = PresentationSource.FromVisual(this) as HwndSource;
if (hwndSource != null)
{
hwndSource.AddHook(new HwndSourceHook(this.WndProc));
}
} private const int WM_NCHITTEST = 0x0084;
private readonly int agWidth = 12; //拐角宽度
private readonly int bThickness = 4; // 边框宽度
private Point mousePoint = new Point(); //鼠标坐标
public enum HitTest : int
{
HTERROR = -2,
HTTRANSPARENT = -1,
HTNOWHERE = 0,
HTCLIENT = 1,
HTCAPTION = 2,
HTSYSMENU = 3,
HTGROWBOX = 4,
HTSIZE = HTGROWBOX,
HTMENU = 5,
HTHSCROLL = 6,
HTVSCROLL = 7,
HTMINBUTTON = 8,
HTMAXBUTTON = 9,
HTLEFT = 10,
HTRIGHT = 11,
HTTOP = 12,
HTTOPLEFT = 13,
HTTOPRIGHT = 14,
HTBOTTOM = 15,
HTBOTTOMLEFT = 16,
HTBOTTOMRIGHT = 17,
HTBORDER = 18,
HTREDUCE = HTMINBUTTON,
HTZOOM = HTMAXBUTTON,
HTSIZEFIRST = HTLEFT,
HTSIZELAST = HTBOTTOMRIGHT,
HTOBJECT = 19,
HTCLOSE = 20,
HTHELP = 21,
}
protected virtual IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
switch (msg)
{
case WM_NCHITTEST:
{
this.mousePoint.X = (lParam.ToInt32() & 0xFFFF);
this.mousePoint.Y = (lParam.ToInt32() >> 16); //告诉系统你已经处理过该消息，不然设置为false
handled = true;
#region 测试鼠标位置
// 窗口左上角
if (this.mousePoint.Y - this.Top <= this.agWidth
&& this.mousePoint.X - this.Left <= this.agWidth)
{
return new IntPtr((int)HitTest.HTTOPLEFT);
}
// 窗口左下角
else if (this.ActualHeight + this.Top - this.mousePoint.Y <= this.agWidth
&& this.mousePoint.X - this.Left <= this.agWidth)
{
return new IntPtr((int)HitTest.HTBOTTOMLEFT);
}
// 窗口右上角
else if (this.mousePoint.Y - this.Top <= this.agWidth
&& this.ActualWidth + this.Left - this.mousePoint.X <= this.agWidth)
{
return new IntPtr((int)HitTest.HTTOPRIGHT);
}
// 窗口右下角
else if (this.ActualWidth + this.Left - this.mousePoint.X <= this.agWidth
&& this.ActualHeight + this.Top - this.mousePoint.Y <= this.agWidth)
{
return new IntPtr((int)HitTest.HTBOTTOMRIGHT);
}
// 窗口左侧
else if (this.mousePoint.X - this.Left <= this.bThickness)
{
return new IntPtr((int)HitTest.HTLEFT);
}
// 窗口右侧
else if (this.ActualWidth + this.Left - this.mousePoint.X <= this.bThickness)
{
return new IntPtr((int)HitTest.HTRIGHT);
}
// 窗口上方
else if (this.mousePoint.Y - this.Top <= this.bThickness)
{
return new IntPtr((int)HitTest.HTTOP);
}
// 窗口下方
else if (this.ActualHeight + this.Top - this.mousePoint.Y <= this.bThickness)
{
return new IntPtr((int)HitTest.HTBOTTOM);
}
else // 窗口移动(也可在窗体MouseLeftButtonDown事件中调用DragMove()方法)，双击最大化，所有剩余鼠标操作映射到标题栏
{
return new IntPtr((int)HitTest.HTCAPTION);
}
#endregion
}
}
return IntPtr.Zero;
}
}
}

弊端 窗体 中控件 事件 失效