wpf中插入winform控件并获取句柄

因工作需要使用wpf做界面，而有个开发包依赖picturebox控件，上网研究了一下，总算弄通了。

首先在项目中添加引用System.Windows.Forms与WindowsFormsIntegration

 //在wpf主界面添加
 xmlns:wfh="clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration"
 xmlns:wfc="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms"

 //添加winform控件
 <Grid>
         <WindowsFormsHost x:Name="form1" HorizontalAlignment="Left" Height="" Margin="10,65,0,0" VerticalAlignment="Top" Width="">
             <wfc:FlowLayoutPanel x:Name="flowLayoutPanel1">

             </wfc:FlowLayoutPanel>
         </WindowsFormsHost>
 </Grid>

获取句柄

             IntPtr flpHandle = flowLayoutPanel1.Handle;//仅限主界面代码段

动态创建picturebox放到flowLayoutPanel中

 PictureBox pb = new PictureBox
 {
 　　Width = ,
 　　Height = ,
 　　Bounds = new System.Drawing.Rectangle(, , , ),
 　　Name = "PictureBox" + Convert.ToString(index)
 };

 PictureBox temp = pb;
 Control flp = Control.FromHandle(flpHandle);
 //考虑动态创建可能存在跨线程访问，添加判断
 if (flp.InvokeRequired)
 {
 　　flp.Invoke(new Action(
 　　() => { flp.Controls.Add(temp); picHandle = temp.Handle; }
 　　));
 }
  else
 {
20　　 flp.Controls.Add(pb);
 }

注意在非主界面程序段，不要调用界面元素，不然会报错InvalidaOperationException