Go Wpf--thumb

A thumb class that represents a control that can be dragged by the user. Its main three events were dragdelta,dragstarted,dragcompleted.

dragdelta--when a Thumb control has logical focus and mouse capture, it occurs one or more times as the mouse position changes.

dragstarted--occurs when the Thumb control receives logical focus and mouse capture.

dragcompleted--occurs when the Thumb control loses mouse capture.

 1 <window.resources> 
 2 <resourcedictionary> 
 3 <controltemplate x:key= "Template1" &G T                         
 4 <ellipse width= "height="; 
 5 <ellipse.fill> 
 6 <solidcolorbrush color= "Black" ></SOLIDCOLORBRUSH> 
 7 </ellipse.fill 
 8 </ellipse> 
 9 </controltemplate> 
 </RESOURCEDICTIONARY&G T 
 one </window.resources> 
 
 <canvas name= "MyCanvas"; 
 <thumb name= "Mythumb" Drag Delta= "Ondragdelta" background= "Blue" dragstarted= "mythumb_dragstarted" dragcompleted= "mythumb_dragcompleted" 
 canvas.left= "0" canvas.top= "0" width= "height=" "/>"; 
 
 <!--template= "{STATICR Esource Template1} ", if this method is used to bind the thumb template, it is not possible to change the background of the--> through the dragstarted,dragcompleted event; 
 </Canvas> 

1    void Ondragdelta (object sender, DragDeltaEventArgs e)
2         {
3             canvas.setleft (Mythumb, Canvas.getleft (mythumb) + E.horizontalchange);
4                                        
5             canvas.settop (Mythumb, Canvas.gettop (mythumb) +  e.verticalchange);
6                                       
7         }

9         private void Mythumb_dragstarted (object sender, Dragstartedeventargs e)
Ten         {
One             mythumb.background = Brushes.orange;
--         }

+         private void mythumb_dragcompleted (object sender, DragCompletedEventArgs e)
         {
             mythumb.background = Brushes.blue;
+         }

Go Wpf--thumb