VC++ 在树形控件中插入背景图，看到了树控节点的那结连线了吗？实现思路：先在内存CDC 对象上对TreeView 默认绘图，然后再选择背景位图，与缺省位图进行与操作合成TreeView 的背景图，最后通过函数BitBlt()将树形控件的背景图呈现出来。同时为了避免闪烁，必须重载函数OnItemexpanding()和函数OnItemexpanded()-VC++ insert background image in the tree control, see the end of that tree control node connected? Realization of ideas: the first object in the memory of the CDC TreeView default drawing, and then select the background bitmap operations conducted with synthetic TreeView background image with the default bitmap, and finally through the function BitBlt () the background tree controls presented . Meanwhile, in order to avoid flicker, must override function OnItemexpanding () and functions OnItemexpanded ()