Collapsing CommandBarStripElement

Hello, Pierre-Jean,         

The described behavior is expected. Note that the CommandBarStripElement's position depends on its DesiredLocation property value. Hence, you collapse the second CommandBarStripElement, the DesiredLocation of the third CommandBarStripElement should be adjusted to the location of the hidden strip element: 

            this.commandBarStripElement2.Visibility = ElementVisibility.Collapsed;
            this.commandBarStripElement3.DesiredLocation = this.commandBarStripElement2.Location;

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik

Thanks for your message

Unfortunately I have not managed to get it to work.
I have created a test program with 4 CommandBarStrips (all4 have grip and overflow buttons set to collapsed)

And I have added two buttons one to show all 4 Strip Elements enad one to show strips 1,2 and 4, i.e. to hide strip 3 and have strip 4 next to strip 2

Here is the code behind the two buttons (which to me follows your suggestion)

--------------------------------------------------------------------------------------------------------------------------------------
    Private Sub RadButton1_Click(sender As Object, e As EventArgs) Handles RadButton1.Click
        'show 1,2,3,4
        CommandBarStripElement1.Visibility = Telerik.WinControls.ElementVisibility.Visible
        CommandBarStripElement2.Visibility = Telerik.WinControls.ElementVisibility.Visible
        CommandBarStripElement3.Visibility = Telerik.WinControls.ElementVisibility.Visible
        CommandBarStripElement4.Visibility = Telerik.WinControls.ElementVisibility.Visible
    End Sub
    Private Sub RadButton3_Click(sender As Object, e As EventArgs) Handles RadButton3.Click
        'show 1,2,4 hide 3
        CommandBarStripElement1.Visibility = Telerik.WinControls.ElementVisibility.Visible
        CommandBarStripElement2.Visibility = Telerik.WinControls.ElementVisibility.Visible
        CommandBarStripElement3.Visibility = Telerik.WinControls.ElementVisibility.Collapsed
        CommandBarStripElement4.Visibility = Telerik.WinControls.ElementVisibility.Visible
        CommandBarStripElement4.DesiredLocation = CommandBarStripElement3.Location
    End Sub

--------------------------------------------------------------------------------------------------------------------
The attached compilation of screen shots shows the effect
1. Initial state : Correct, i.e. Strip 1, 2 3 and 4 in the original order
2. After click on Button "Show 1,2,4" I have strips 1,4,2 Strip 3 is correctly hidden but strip 4 should be after strip 2 not before
3. After clic on Button Show 1,2,3,4 Where I owuld expect to have the 4 strips in teh order 1,2,3,4 I have Strip 1, 2, 4 and 3

I have tried many combinations but never gor the correct behavior

I nust be missing something but I fail to see what

Thanks in advance

PJ

Hello, Pierre-Jean, 

According to the provided explanation and screenshot, I was able to modify my sample project and replicate the undesired behavior that you are facing. This is because the CommandBarStripElement3.Location property is PointF(0,0). This makes CommandBarStripElement4.DesiredLocation to be before all other strip elements except CommandBarStripElement1 which also wants to be placed at PointF(0,0). You can use the CommandBarStripElement3.DesiredLocation. 
I have updated my sample project which result is illustrated in the attached gif file. Please refer to the provided attachment.

Should you have further questions please let me know.

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik

Hello and thanks for your message

Your sample project does indeed work as desired

Hoever when I implement the same in my project (which is in VB) It does not work.

Clicking on Button "Show 1,2,4" hides strip 3 but does not move strip 4 next to strip 2
Actually it behaves exactly in the same way as in your programm when I change Collapsed to Hidden on Strip 3 

Is there a Bug whan used in VB.Net ???

Here below my vb Code

----------------------------------------------------------------------------------------------

    Private Sub RadButton1_Click(sender As Object, e As EventArgs) Handles RadButton1.Click
        'show 1,2,3,4
        CommandBarStripElement1.Visibility = ElementVisibility.Visible
        CommandBarStripElement2.Visibility = ElementVisibility.Visible
        CommandBarStripElement3.Visibility = ElementVisibility.Visible
        CommandBarStripElement4.Visibility = ElementVisibility.Visible
    End Sub
    Private Sub RadButton3_Click(sender As Object, e As EventArgs) Handles RadButton3.Click
        'show 1,2,4 hide 3
        CommandBarStripElement1.Visibility = ElementVisibility.Visible
        CommandBarStripElement2.Visibility = ElementVisibility.Visible
        CommandBarStripElement3.Visibility = ElementVisibility.Collapsed
        CommandBarStripElement4.Visibility = ElementVisibility.Visible
        CommandBarStripElement4.DesiredLocation = New System.Drawing.PointF(CommandBarStripElement3.DesiredLocation.X, CommandBarStripElement3.DesiredLocation.Y)
    End Sub
-----------------------------------------------

Hello

I think that I have finally put the fnger on the origine of the problem.

The erroneous positionning of the strip element, when the previous one is collapsed, occurs when the Monitor Display parameter is set to a value different from 100%.

As it happens I was running your test application on a PC set to 100% and my application is on a PC with a 4K display set to 150%
as soon as I set it to 100% the positioning is correct. 

I hope this info can be usefull to others.

Anyway I do not understand why I have to programmatically redefine the desiredposition, I would expect the control to automatically reset the position when a stripelement is set to collapsed; as such I dont see the difference between Hidden and Collapsed other than the fact that I can reposition in Collapsed mode and not in Hidden Mode.

I would appreciate an explanation and eventually take this as a suggestion for improvement, may be with the addition of a property "AutoCollapse"

In any case I thank you for the time you have spent on this issue

best regards

            PointF descaled = TelerikDpiHelper.DescalePointF(this.commandBarStripElement3.DesiredLocation, this.commandBarRowElement1.DpiScaleFactor);
            this.commandBarStripElement4.DesiredLocation = descaled;

Please give it a try and see how it works on your end.

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik

Thank you

indeed this works

I have also managed to get a proper behavior by changes in the manifest and appconfig files, these changes also correct some minor incorrect displays when in 150%. Here are the changes I made:

1. Manifest - cemmented the following:
  <!--<application xmlns="urn:schemas-microsoft-com:asm.v3">
    <windowsSettings>
      <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true</dpiAware>
    </windowsSettings>
  </application>-->

2.. in App.config: added the following:
  <appSettings>
    <add key="EnableWindowsFormsHighDpiAutoResizing" value="false"/>
    <add key="ClientSettingsProvider.ServiceUri" value=""/>
  </appSettings>
 <System.Windows.Forms.ApplicationConfigurationSection>
  <add key="DpiAwareness" value="PerMonitorV2" />
</System.Windows.Forms.ApplicationConfigurationSection>

and I have set the AutoScaleMode property of the form to DPI

Thanks again

PJ

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik