[Gambas-user] How to know permanently the cursor coordinates in a gridview?

[Simonart Dominique]

Benoît Minisini a écrit :
>> Hi,
>> I've a main Gridview (grdGame) surrounded by 2 other grids, grdHdef on
>> top and grdVdef on left of grdGame
>>
>> When the mouse cursor is over the main grid, I want to highlight a
>> column of the top grid and a row of the left grid facing the cursor
>> position.
>> How to know at each instant where the cursor is, that is without action
>> on any button?
>> I cannot use Mouse.X/Y because there is no mouse event
>>
>> Thank for your help,
>>
> 
> Yep. The problem is that mouse move are not always generated. It depends on 
> the internal implementation of the widget in the toolkit.
> 
> What you can do is enabling a timer at Enter event, and disabling it at Leave 
> event. Ecah timer the timer is triggered, just use the Mouse.ScreenX and 
> Mouse.ScreenY properties to calculate where the cursor is on the GridView.
> 
> The right solution would be implementing a "Tracking" property in the Control 
> class to tell Gambas that you want MouseMove events even if no mouse button is 
> pressed.
> 
> Regards,
> 

Thanks Benoit,
I've now the thing working! I couldn't think about 
Mouse.ScreenX/Y because I work with 2.8 version and the Help 
menu show only Mouse.X/Y and nothing else.
In a first try, I used the Enter event to post a flag and 
start a loop like this

WHILE myFlag
     WAIT 0.2
     ...whatever
wend

and used the Leave event to annulate the flag, but it didn't 
work (recursivity problem I think)

so I changed the loop to break as soon as the cursor get out 
the Grid limits (this is exactly what the Leave event did I 
think :) ) and all is runing fine!

I had another idea in mind, by using a DrawingArea with 
transparency and nothing in it and place it over the grid, 
so I could use the tracking caracteristic, but I would have 
to manage the grid process myself, so I did not try it yet.

regards,
Dominique Simonart