Hi,
I have a question regarding the drawing of drop down menus.
We hava a Progress/ABL application and heavily use Infragistics controls for the UI. The application mimics some kind of MDI by using the UltraDockmanager to create tabs and host multiple windows. When the application is used via remote desktop we see that the Popup menus of the UltraToolBarManager (uses PopupMenuTools and ButtonTools) leaves a "hole" in the entire application before the menu is finally drawn. You can see parts of the window/desktop which lies behind our application.
That's very annoying when hovering over the menubar and each time a dropdown is going to happen the place where the dropdown menu will be is erased before the dropdown is visible.
The problem is only visible on remote desktops.
Is there a way to tell the ToolbarsManager not to erase the background when a dropdown is going to happen?
I tried Suspend and ResumeLayout of our UltraPanel (main panel of a window) in BeforeToolDropdown and AfterToolDropdown, but it doesn't help.
Any ideas?
Any help is appreciated!
Update: We use/allow transparency in our application. As soon as "AllowTransparency" is set to "true", the drop down menu creates those "holes". AllowTransparency = yes fixes the problem but now the user cannot enable transparent backgrounds of the UltraDock tabs.
Hello,
It sounds like the color used to render the menu or menu shadows is matching that of the TransparencyColor. Try setting the ShowMenuShadows on the UltraToolbarsManager to False and see if that helps. Otherwise, I'll probably need some sort of sample to reproduce the issue through remote desktop.
Let me know if this helps.
Chris
thanks for your help.
I set ShowMenuShadows to false, but it didn't help. (We use bright green as transparency color, so I doubt that the ToolbarsManager uses this color to draw shadows. Additionally the problem only occurs on remote desktops. So maybe its an drawing issue?)
Unfortunately its not easy to extract sample code of our application.
Maybe you have another idea of a switch?
Can the erasing of the background be disabled?
Regards,
Jörg
I have no other ideas on what might be the cause. When a popup is shown, we simply show a new window at the desired location. My assumption is that the erasing of the background is a side effect of a new window being drawn when AllowTransparency and Remote Desktop are being utilized.
If the issue does not occur with every sample utilizing our controls when remoting into the machine, it leads me to believe that there is some code/setting within your application that is "triggering" this strange behavior when using Remote Desktop. Unfortunately, there's not much else for me to go on with a sample to investigate.
Thanks,
Hi Chris,
I built a small sample application. (C#, Windows Forms Application)
-Added an UltraToolbarsManager
-Added two PopUpMenuTools
-Added some PopUpMenuTools and some (>10) ButtonTools to the PopUpMenuTools.
Additionally I added a button to the ToolBarsmanager to switch Transparency on/off. (Not really necessary)
In the constructor I set Opacity to 1, AllowTransparency to yes and the TransparencKey to Color.Green. (Because those attributes are used in our application)
Now, when you run this simple app via remote desktop, you can reproduce the behavior. Before the menu is drawn you can see the desktop for a split second.
Hey Jörg,
Can you attach your sample? It can be uploaded from the Options tab at the top.
I modified my sample to match the steps you provided. However, due to setting the Opacity on the form to 1, the form cannot be seen and therefore cannot interact with the menus. When I changed the Opacity to 10%, I could see the form enough to interact with the PopupMenuTools. When this tools would dropdown, the dropdown window is shown at full opacity, and I did not see the desktop background.