change
BiggerButton.addListener("execute", this.bigfont);
SmallerButton.addListener("execute", this.smallfont);
to
BiggerButton.addListener("execute", this.bigfont, this);
SmallerButton.addListener("execute", this.smallfont, this);
otherwise your functions are not executed in the right scope.
Qoodary <[email protected]> hat am 18. September 2010 um 16:34 geschrieben:
>
> Has nobody an advice for me? :-)
>
> I know that my problem is;
> this.getRoot() in the function "bigfont"
> But I do not understand in the moment why this cause a problem.
> If I add
> var doc = this.getRoot(); in the "main" function it is no problem.
>
> thanks a lot for any help.
> regards
> Hansjoerg
>
>
>
> Qoodary wrote:
> >
> > Hi all,
> > I want to add an option for users to change the font size by hand.
> > I add this menu:
> > getFontSizeMenu : function()
> > {
> > var menu = new qx.ui.menu.Menu;
> > var BiggerButton = new qx.ui.menu.Button(this.tr("Bigger ++"));
> > var SmallerButton = new qx.ui.menu.Button(this.tr("Smaller --"));
> >
> > BiggerButton.addListener("execute", this.bigfont);
> > SmallerButton.addListener("execute", this.smallfont);
> >
> > menu.add(BiggerButton);
> > menu.add(SmallerButton);
> > return menu;
> > },
> >
> > Functions:
> > ---------------------------------
> > bigfont : function() {
> > var doc = this.getRoot();
> > doc.setFont(new qx.bom.Font(20));
> > }
> > smallfont : function() {
> > var doc = this.getRoot();
> > doc.setFont(new qx.bom.Font(10));
> > }
> >
> > I dont know if this is the correct way. If you click in the menu at
> > "Bigger" I receive the error message
> > this.getRoot is not a function
> > [Break on this error] var doc = this.getRoot();
> >
> > What is wrong?
> > How can you change the font in steps like +2 . -2 ?
> >
> > regards
> > Hansjoerg
> >
>
> --
> View this message in context:
> http://old.nabble.com/Decrease%2C-increase-Font-size--tp29738521p29746561.html
> Sent from the qooxdoo-devel mailing list archive at Nabble.com.
>
>
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