Issue with tooltiptext visibility

GoDiagram (6 and previous)
1

Hi,
There is an issue with tooltiptext visibility when subsequent tooltiptext window appear as the pointer moves from one control to another.

First tooltiptext area is smaller as:
Then I put mouse on adjacent object, whose tooltiptext is larger than first one. Then it shows incomplete tooltiptext & width of this tooltip is same as the earlier one as:
Then again I put mouse on the same object after some miliseconds, then it shows the complete tooltiptext as:
Please provide me some hint to resolve this issue.
2

This isn’t a standard Windows tooltip, right? It’s a GoObject you’ve created… ? Did you enhance GoBalloon?

3
Hi,
Yes, this is tooltip with GoView.
GoView.ToolTip.IsBalloon = true;
No I haven't used GoBalloon object directly.
I just set ToolTipText property of each object in the beginning.
When there is a mouse pointer on the object at run time, then it displays the associated toltiptext at that time.
4

oh… how about that? I never knew this existed. (or if I did, I forgot… which seems to be happening more as I grow older.)



ok, I can reproduce this. Seems like it has to be a .NET bug, since it really is their tooltip, but I’ll see if I can find a workaround.

5
ok..
then also reply me with a workaround whenever you find.
Thanks
6

ok, this works, but has the downside of requiring you to derive your own GoView (something we try to avoid making people do).



in your GoView class, put this:



public override void DoToolTipObject(GoObject obj) {



if (this.ToolTip == null)

return;

String oldttt = this.ToolTip.GetToolTip(this);

String newttt = null;

while (obj != null) {

newttt = obj.GetToolTip(this);

if (newttt != null) break;

obj = obj.Parent;

}

if (newttt == null)

newttt = this.ToolTipText;

if (newttt == null)

newttt = “”;

if (newttt != oldttt) {

if (this.ToolTip.IsBalloon) this.ToolTip.RemoveAll(); // THIS IS THE FIX HERE

this.ToolTip.SetToolTip(this, newttt);

}

}



I was able to verify this problem happens over other controls (I set up a Button with a different tooltip on the left and right sides, changing it in MouseMove… and got the same mis-sized problem).



This has only been tested on Vista with .NET 3.5.

7

Well, the bug still exists in .NET 4.



But… the workaround above works on .NET 4 and Windows 7 as well.

8

Hi,
Thanks a lot for your support.
It works perfectly.