如何从任何地方捕获Ctrl +鼠标滚轮？

Question

There is a RawViewControl (I have no access to its code) that is placed on ViewDoc control - ViewDoc is a container for it. I am trying to handle mousewheel event but RawViewControl has no such event and if I handle mousewheel event of ViewDoc it have not fires (this is right - the focus is on the RawViewControl). How could I catch this event from ViewDoc class?

Answer 1

I'm not sure if I understand your question correctly, but one way I handle any ctrl + something movement is, OnKeyDown I check to see if the key ctrl has been clicked. If it has I set a global variable to g_IsCtrlDownTrue = true . OnKeyUp sets it back to false. Then, on your mouse scroll check to see if ctrl is down, and if it is perform your ctrl + mouse movement.