[英]Custom Paint handler on a WinForms Control inside a WPF application
我有一個WPF應用程序,其中使用此方法托管了Windows Form元素:
System.Windows.Forms.Integration.WindowsFormsHost host =
new System.Windows.Forms.Integration.WindowsFormsHost();
gMapZoom = new GMap();
gMapZoom.Paint += new PaintEventHandler(gMapZoom_Paint);
host.Child = gMapZoom; // gMapZoom is the Windows Form control
// Add the interop host control to the Grid
// control's collection of child controls.
this.grid1.Children.Add(host);
但是,在嘗試向其添加自定義Paint事件處理程序時遇到問題。 似乎將其添加到WPF中(此處未顯示)會導致在WinForm控件下完成繪制,因此頂部沒有任何顯示。 將其添加到WinForm控件不會執行任何操作。 繪畫事件(gMapZoom_Paint)從未被調用。
任何幫助將非常感激。
您可以將PaintEventHandler事件添加到Windows窗體控件(gMapZoom)
public event PaintEventHandler OnPaint;
public GMap()
{
InitializeComponent();
this.Paint += new PaintEventHandler(GMap_Paint);
}
void Gmap_Paint(object sender, PaintEventArgs e)
{
OnPaint(this, e);
}
在后面的WPF代碼中:
{
System.Windows.Forms.Integration.WindowsFormsHost host =
new System.Windows.Forms.Integration.WindowsFormsHost();
gmap = new GMap();
gmap.OnPaint += new System.Windows.Forms.PaintEventHandler(gmap_Paint);
host.Child = gmap;
this.grid1.Children.Add(host);
}
void gmap_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
//Custom paint
}
然后,您可以通過以下方式觸發OnPaint事件:
gmap.Invalidate();
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.