mouse move event catch problem

[seymourc64]

I have this problem in my application.I need to catch mouse move event on paintbox(which is on the form) when it is happening on form and mouse button is not pressed.

 

[TonyGroves]

How about the TControl::OnMouseMove event?

 

[seymourc64]

Ok,PaintBox is derived from TControl,but I dont understand how you think i can handle this event.Imagine i am in one state and i want to stay in that state even if i dont hold mouse button,and move pointer outside of paintbox.I want to prevent changing cursor and also want to disable selection of menus,buttons and other element of form.Do you mean i use some internal loop(explain me a little bit more your soluttion)

 

[TonyGroves]

TControl::OnMouseMove will be activated every time the mouse is moved within the associated control, whether that is the TPaintBox or the TForm. I don't understand what else you are looking for.

 

[mexicmex]

You can catch next events :

1. CM_MOUSEENTER / CM_MOUSELEAVE when mouse pointer "enters/leaves" the control (client) area.
Unfortunately there is no message handler in the VCL controls so you must write your own.

2. WM_MOUSE_MOVE is mapped on the OnMouseMoveEvent;