Problems dynamically changing helpstring for combobox.

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Byron - 27 Apr 2005 22:07 GMT

I am setting the helpstring for all interesting controls to a default in the
form load method. I am then using the SelectedIndexChanged of a combobox to
dynamically change the help displayed using the popup menu, F1, and the
toolltip depending on the currently selected item in the control. I pull
details from the item in the currently selected combobox item so the user can
optionally see more information about the item they are selecting. I have
two questions about this:

1. Why does the tooltip text change, but not the test that is displayed
when I use F1.

2. Is there some way to stop the tooltip from popping up momentarily when
the helpstring is changed in code?

This is a snippet of the code I'm using to change the helpstring.

// Construct the help from the information about the ammo type
// currently selected.
this.helpProvider1.SetHelpString(this.cboHEAT, <A bunch of stuff >)
this.toolTip1.SetToolTip(this.cboHEAT,
helpProvider1.GetHelpString(this.cboHEAT));

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Durstin Selfridge - 29 Apr 2005 19:24 GMT

I can't reproduce your first problem, but you can solve #2 (which I can
replicate), by setting the tooltip to inactive before you change it, and
then reactivating it. Using your code snippet, it would read:

// Construct the help from the information about the ammo type
// currently selected.
this.helpProvider1.SetHelpString(this.cboHEAT, <A bunch of stuff >)
this.toolTip1.Active = false;
this.toolTip1.SetToolTip(this.cboHEAT,
helpProvider1.GetHelpString(this.cboHEAT));
this.toolTip1.Active = true;

> I am setting the helpstring for all interesting controls to a default in the
> form load method. I am then using the SelectedIndexChanged of a combobox to
[quoted text clipped - 17 lines]
> this.toolTip1.SetToolTip(this.cboHEAT,
> helpProvider1.GetHelpString(this.cboHEAT));

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Byron - 29 Apr 2005 20:16 GMT

Thanks for the reply. Your suggestion worked as advertised. I did something
like that before without success, but I can't remember what it was and it
apparentky wasn't what you suggested.

I still have the first problem, so if anybody else has any ideas let me know
please.

> I can't reproduce your first problem, but you can solve #2 (which I can
> replicate), by setting the tooltip to inactive before you change it, and
[quoted text clipped - 32 lines]
> > this.toolTip1.SetToolTip(this.cboHEAT,
> > helpProvider1.GetHelpString(this.cboHEAT));

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durstin - 30 Apr 2005 01:05 GMT

Try changing your <A bunch of stuff> into something simple, like the
cboHeat.SelectedIndex.ToString(). This will tell you whether the problem is
in your bunch of stuff...

> Thanks for the reply. Your suggestion worked as advertised. I did something
> like that before without success, but I can't remember what it was and it
[quoted text clipped - 39 lines]
> > > this.toolTip1.SetToolTip(this.cboHEAT,
> > > helpProvider1.GetHelpString(this.cboHEAT));

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Problems dynamically changing helpstring for combobox.

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