Double click event crashes CEGUI

[Evenstar]

Hi,

I've created a simple GUI that contains a static image with a transparent background titlebar in XML. I've subscribed the staticimage with the CEGUI::Window::EventMouseDoubleClick event. However, every time I double click the static image, the application crashes here:

Code: Select all

void FrameWindow::toggleRollup(void)
{
    if (isRollupEnabled())
    {
        d_rolledup ^= true;
       
        // event notification.
        WindowEventArgs args(this);
        onRollupToggled(args);
    }

}


The onRollupToggled function is corrupt (i.e. NULL) for some reason. In other words, stepping into onRollupTogged causes the Instruction Pointer to point to 0000:0000.

Thanks for any help,
Brian

P.S. my XML code is:

Code: Select all

<?xml version="1.0" ?>
<GUILayout>
    <Window Type="DefaultWindow" Name="root">
   
        <Window Type="WindowsLook/StaticImage" Name="CADETControlWnd" >
            <Property Name="Image" Value="set:CADETImageset image:Background" />
            <Property Name="BackgroundEnabled" Value="False" />
            <Property Name="FrameEnabled" Value="False" />
            <Property Name="RollupEnabled" Value="False" />


<!-- Change these properties to modify the dimensions of the CADET Static window -->
            <Property Name="AbsoluteRect" Value="l:0.0 t:0.0 r:640.0 b:331.25" />
<!--
            <Property Name="AbsoluteRect" Value="l:0.0 t:0.0 r:320.0 b:165.625" />
-->           
           
            <Window Type="WindowsLook/FrameBkgnd" Name="CADETControlBkgnd">
                <Property Name="Visible" Value="true" />
                <Property Name="RelativeRect" Value="l:0.0 t:0.0 r:1.0 b:1.0" />
                <Property Name="RollupEnabled" Value="False" />
            </Window>
           
            <Window Type="WindowsLook/StaticImage" Name="TFCWnd" >
                <Property Name="RollupEnabled" Value="false" />
                <Property Name="Image" Value="set:CADETImageset image:TFC" />
                <Property Name="BackgroundEnabled" Value="False" />
                <Property Name="FrameEnabled" Value="False" />
                <Property Name="RelativeRect" Value="l:0.867188 t:0.264151 r:0.918945 b:0.367925" />
            </Window>
        </Window>           
    </Window>
</GUILayout>


[martignasse]

hi,

you use StaticImage, but you try to put in a property(RollupEnabled) that StaticImage hasn't, it's a FrameWindow property.

look in the API Reference.

[Evenstar]

hi,

you use StaticImage, but you try to put in a property(RollupEnabled) that StaticImage hasn't, it's a FrameWindow property.

look in the API Reference.

Thanks. This doesn't solve my problem, and it was actually a test on my part that I forgot to take out of my code. You see, when the application crashes, the "this" pointer points to a class whose WidgetTypeName is "Falagard/StaticImage". Rollup is enabled, so the check for "if (isRollupEnabled())" is always true. At this point, onRollupToggled is already NULL. The reason I had put the property in the XML code in the first place was to try and prevent the crash from occuring because the conditional statement would evaluate to False.

I really wish your answer was the answer I needed, but unfortunately it wasn't.

Any other ideas? Personally, if I were a betting man, I'd bet it is a memory overwrite. Where that would be happening I do not know.

Thanks,
Brian

[lindquist]

rollup enabled is really just the FrameWindow.no other widgets have that method or property.

you should never end up in then FrameWindow code for anything but a FrameWindow.

something is definitely messed up.

[edit]WindowsLook/FrameBkgnd is'nt default, maybe you invalidated the XML while adding it, and TinyXML is'nt catching it. You could try using the XercesParser for validation.
Not sure it helps but it seems worth a try (unless it's just an alias)[/edit]

[Evenstar]

Speaking of FrameBkgnd, that is a new looknfeel that I added. I'm new to CEGUI, so it's very possible that I didn't do something right. What I'm trying to do is to create a transparent titlebar that fills the parent window.

In my XML code that I pasted, do I need to have a FrameWindow as the overall parent? Currently, it is a staticimage window. If so, how do I create a captionless, borderless frame window using XML?

Here is the code for my FrameBkgnd looknfeel.

Thanks,
Brian

Code: Select all

<WidgetLook name="WindowsLook/FrameBkgnd">
 <Property name="CaptionColour" value="FF000000" />
 <ImagerySection name="normal">
  <FrameComponent>
   <Area>
    <Dim type="LeftEdge">
     <AbsoluteDim value="0" />
    </Dim>
    <Dim type="TopEdge">
     <AbsoluteDim value="0" />
    </Dim>
    <Dim type="RightEdge">
     <UnifiedDim scale="1" type="RightEdge" />
    </Dim>
    <Dim type="BottomEdge">
     <UnifiedDim scale="1" type="BottomEdge" />
    </Dim>
   </Area>
  </FrameComponent>
 </ImagerySection>
 <ImagerySection name="caption">
  <TextComponent>
   <Area>
    <Dim type="LeftEdge" ><AbsoluteDim value="12" /></Dim>
    <Dim type="TopEdge" ><AbsoluteDim value="0" /></Dim>
    <Dim type="RightEdge" >
     <UnifiedDim scale="1" type="RightEdge">
      <DimOperator op="Subtract">
       <WidgetDim dimension="Height" />
      </DimOperator>
     </UnifiedDim>
    </Dim>
    <Dim type="BottomEdge" ><UnifiedDim scale="1" type="BottomEdge" /></Dim>
   </Area>
   <ColourProperty name="CaptionColour" />
   <VertFormat type="CentreAligned" />
  </TextComponent>
 </ImagerySection>
 <StateImagery name="Active">
  <Layer>
   <Section section="normal">
    <Colours topLeft="00A7C7FF" topRight="00A7C7FF" bottomLeft="00A7C7FF" bottomRight="00A7C7FF" />
   </Section>
   <Section section="caption" />
  </Layer>
 </StateImagery>
 <StateImagery name="Inactive">
  <Layer>
   <Section section="normal">
    <Colours topLeft="00EFEFEF" topRight="00EFEFEF" bottomLeft="00EFEFEF" bottomRight="00EFEFEF" />
   </Section>
   <Section section="caption" />
  </Layer>
 </StateImagery>
 <StateImagery name="Disabled">
  <Layer>
   <Section section="normal">
    <Colours topLeft="00EFEFEF" topRight="00EFEFEF" bottomLeft="00EFEFEF" bottomRight="00EFEFEF" />
   </Section>
   <Section section="caption" />
  </Layer>
 </StateImagery>
</WidgetLook>


[lindquist]

can you post the scheme as well?

[Evenstar]

Sure. Here is the line of interest. It was added to the WindowsLookSkin.scheme file. Nothing else was changed.

Code: Select all

<FalagardMapping WindowType="WindowsLook/FrameBkgnd" TargetType="Falagard/Titlebar" LookNFeel="WindowsLook/FrameBkgnd" />


[lindquist]

You cant have a free floating titlebar atm.
The code is assuming that it is attached to a FrameWindow.

Code: Select all

static_cast<FrameWindow*>(getParent())->toggleRollup();

What exactly is it you want to acheive?

[Evenstar]

Thanks for all the help with this. I appreciate it.

What I'd really like to do is to have a window that can be clicked anywhere an alpha value is non-zero and moved about. For example, having a window with the image of a CD on it would be draggable from all parts except the center and outer edges.

What I was trying to accomplish with the XML code above was to have a static image window as my main window with a transparent title bar window as its child. The title bar window would be made to fit to the width and height of the static image window. This works pretty well, but it allows you to click anywhere in the window (even those places whose alpha values are zero) and move the window.

Does that make any sense?

Thanks.

[lindquist]

yes that makes sense. CEGUI does'nt currently support masking the the clickable area, so this will be a little hard.

What you can do is strip a frame window for all imagery, and make it's titlebar take up the whole area. This can be done from the looknfeel.
You'd need to make a new titlebar looknfeel as well.

HTH

[Evenstar]

You'd need to make a new titlebar looknfeel as well.

Would the titlebar that I created above do the job?

[lindquist]

yeah it seems ok

[Evenstar]

One last question (for now). Looking at the existing WindowsLook/FrameWindow, there are many, many NamedAreas. Are these necessary to include in the new frame window? I've never fully understood the NamedAreas.

Thanks

[martignasse]

you can look in the Falagard system doc where you'll found all required declaration for the FrameWindow looknfeel

[Evenstar]

How do I specify my titlebar instead of using the default __auto_titlebar__? I tried the following code in the WindowsLook.looknfeel, but it didn't work. I replaced "__auto_titlebar__" with "WindowsLook/FrameBkgnd", the name of my titlebar.

Code: Select all

<NamedArea name="ClientWithTitleNoFrame">
 <Area>
  <Dim type="LeftEdge">
   <AbsoluteDim value="0" />
  </Dim>
  <Dim type="TopEdge">
   <WidgetDim widget="WindowsLook/FrameBkgnd" dimension="BottomEdge" />
  </Dim>
  <Dim type="RightEdge">
   <UnifiedDim scale="1" type="RightEdge" />
  </Dim>
  <Dim type="BottomEdge">
   <UnifiedDim scale="1" type="BottomEdge" />
  </Dim>
 </Area>
</NamedArea>


Thanks