Not able to click a button

[Worteltaart]

Though I've written the code in a .NET wrapper for Irrlicht (CP) I won't have any trouble converting code from c++ to C#, that being said, the following problem occurs when I try to add a Button to my project.

First I make a pointer to the GUIEnvironment using:

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GUIEnvironment guienv = device.GUIEnvironmentl

After which I simply add a button to the guienv:

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guienv.AddButton(myRect, guienv.RootElement, 1001, "testButton");

After which I have the guienv being drawn in my main loop:

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if (device.WindowActive)
{
    driver.BeginScene(true, true, new Color(0, 100, 100, 100));
    guienv.DrawAll();
    smgr.DrawAll();
    driver.EndScene(); 
}

The button gets drawn as it should, but I can't click it, any ideas?

[Luben]

Do you have an event receiver to catch the click? Are you calling device.run() in the loop?

[Worteltaart]

Yes, I have done both,
Code for my event delegate (in short ofc.):

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public bool OnEvent(Event p_e)
{
    int eventID = p_e.Caller.ID;

    if (p_e.Type == EventType.GUIEvent)
    {
        switch (p_e.GUIEvent)
        {
            case(GUIEventType.ButtonClicked) :
            {
                 if (eventID == 101)
                 {
                      // perform_magic();
                      return true;
                  }
                  break;
                 // snip snip
              }
          }
      }
     return true;
}

Thing is, the button gets drawn as it's supposed to be, but it's just not clickable (even without an event catcher, it still would look like it's been clicked if you click it, like it's being pushed, you get the idea)

[Masterhawk]

Try "return false;" at the end instead of "return true;"

[Worteltaart]

The return true at the bottom was a typo.

I have loaded a "world" from textures and a heightmap, and I try to draw the GUI over it, maybe this causes the error, any clues?

In other words, I render both a scene and a guienv in my device.run() loop, is this the problem, and if so, how to fix

I could post the code I've written, but it's in two files (+ some texture files) and well, it's quite messy

[xDan]

Do you handle mouse input? EMIE_LMOUSE_PRESSED_DOWN etc, the solution for me was to return false at that point (as Masterhawk said).

[Worteltaart]

That's exactly what went wrong indeed.

I commented out the mouse handlers, but what now?
I need the mouse handler for scrolling the map!

[xDan]

Don't comment it out, just make sure you return false within it (or them) not true.

e.g.

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if (e.EventType == EET_MOUSE_INPUT_EVENT && e.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN)
{
	// blah
	return false;
}

[Worteltaart]

Ah I see, thanks a bunch, works perfectly!