Mouse leave message is not received when it leaves the control

Question

0.00/5 (No votes)

See more:

I am developing an outlook bar control in visual C++ using MFC classes. Currently when the mouse hovers a button, then a 3D look is generated to show that mouse is currently on that button and when i move the mouse from this button to the next, the previous button gets to normal state and the new button over which the mouse has now moved shows a 3D look. Until now things are going fine.

The problem is that when i move the mouse to the first button in the outlook bar control, it gives 3D look which is good, but when i move the mouse further up so that it leaves the boundary of the control, then the button remains in that 3D position which is wrong, instead it should restore its normal position.

I am handling this functionality in the when_mouse_move event handler. Actually when mouse moves from first button to the tool bar of the main window, then it neither receives the when_mouse_move message nor it receives the when_mouse_leave message to indicate me that mouse has passed beyond the boundary of the control. Kindly help me to fix this issue.

Posted 6-Nov-11 18:33pm

Moazzam_Munir

Add a Solution

Comments

Sergey Alexandrovich Kryukov 7-Nov-11 1:03am

Can you make a simple code sample to manifest the problem? Hard to say anything before looking at how you do it.
--SA

RKnGl 7-Nov-11 4:49am

Once, I had an issue with the form element "below" comboBox that was "stealing" desired behavior from it... Maybe You should check the behavior of , if any, panels/ toolbars that hold Your buttons ?

P.S. This behavior occurred only in specific situations when I had some sort of "skinning" and theme forms with inherited preferences .. Can't hurt to check most banal thing 1st ...

2 solutions

Solution 1

Some MS Windows controls (for example the list control header)
are handling the "OnMouseLeave" event by their own
OnTimer(..) callbacks (what window or its part is under mouse?).

Try to do it too... :)

Posted 7-Nov-11 5:12am

Eugen Podsypalnikov

Updated 7-Nov-11 5:14am

v2

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Roger Allen · Accepted Answer · 2011-11-07T05:55:00

Windows does not automatically send a WM_MOUSELEAVE message. When the mouse enters the control, you need to call _TrackMouseEvent to get it to notify you when this occurs:

// track the mouse so we know when it leaves our window
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.hwndTrack = m_hWnd;
tme.dwFlags = TME_LEAVE;
tme.dwHoverTime = 1;
_TrackMouseEvent(&tme);