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user-controlsgenexus

HelloWorld User Control tutorial

I'm doing the "Hello World" tutorial about User Control but without success.

In the first attempt I did the User Control like is shown in the tutorial page http://wiki.genexus.com/commwiki/servlet/hwiki?Hello+World+User+Control

But it didn't work, so I download the finished user control available for download in the end of the tutorial.

With the download user control, I have created this web panel enter image description here

with this event

enter image description here

But I have an empty result enter image description here

What is missing here? Any tips for debugging here?

I'm using the GeneXus latest version, GeneXus X Evolution 3 (trial).

Edit: The user control code:

function HelloWorld($)
{
    this.Width;
    this.Height;
    this.FontFace;
    this.FontColor;
    this.FontSize;

    this.show = function()
    {
        ///UserCodeRegionStart:[show] (do not remove this comment.)
        var buffer= '<a id="hworld1" href="#" style="color:rgb(' + this.FontColor.R + ',' + this.FontColor.G + ',' + this.FontColor.B + ')' + '; font-family:' + this.FontFace+ ';font-size:' + this.FontSize + 'pt;">Hello World!!!</a>';          

        this.setHtml(buffer);                       

        document.getElementById("hworld1").onclick = this.HelloWorldClicked;        

        ///UserCodeRegionEnd: (do not remove this comment.)
    }
    ///UserCodeRegionStart:[User Functions] (do not remove this comment.)

    ///UserCodeRegionEnd: (do not remove this comment.):
}
Solution

  • After I run in cmd line the command: 

    "C:\Program Files <x86>\Artech\GeneXus\GeneXusXEv3Trial\Genexus.exe" /install

    It is now working! It was not clear for me, this step in the tutorial.

    Edit:

    I have found this in the wiki, that explains better how to install an User Control, and solves the problem I had:

    Manual installation

    1. Download the control from GeneXus Marketplace.
    2. Unzip files
    3. Copy the directory under the UserControls directory in the GeneXus installation.
    4. Execute GeneXus with the /install parameter. For example: GX_Installation_Path\GeneXus.exe /install
    5. Check that the toolbox has added the new option under the User Controls section.
    6. Enjoy!