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I have a borderless form in C#.
The form has an icon specified in its properties and I also have the same icon specified for the project in the project properties.
When I had a border on the form, the icon was displayed in the task bar. But when I set the border to None, the icon no longer displays. The taskbar button only shows the text name of my program.
How can I get the icon to display in the taskbar for a borderless form?
Thanks. | | plevintampabay Saturday, January 05, 2008 4:40 AM | Problem solved.
The problem was my ico file. I only had a 32x32 (true color + alpha) image in the ico file. This worked fine on all OS's (Win2K, XP and Vista) so long as I had a border on the form. But when I went to no border, it did not work for Win2K and Vista.
I created an ico file with 16x16, 32x32, 48x48, and 256x256, all true color + alpha. Now I have the icon in the taskbar button on all OS's (for the no border form). I could not tell you which of the icon images is being used where, but I don't care. They were simple enough to create and the problem is solved.
Along with the bit of code obtained from the link given by "marcel nita" (see post above), I now have a borderless form with a taskbar button that has the icon and menu.
Thanks for your help "marcel nita".
Paul
| | plevintampabay Monday, January 07, 2008 4:17 AM | Set its ShowInTaskbar property to true.
Note that in this case the form won't have a system menu.
Regards.
| | Marcel Nita Saturday, January 05, 2008 11:05 PM | Thank you for the reply. Howeveryour post does not help.
That property is already set to true.
Like I said in my original post, if the form has a border, the taskbar shows the icon. Change the border setting to none and the taskbar no longer shows the icon. It still shows the taskbar button, but without the icon.
| | plevintampabay Sunday, January 06, 2008 2:27 AM | I really don't think it is possible...
What about adding a system tray entry for your applicaiton. That would definitely show your app's icon and you could also add some kind of system menu.
| | Marcel Nita Sunday, January 06, 2008 2:30 AM | I have researched this problem extensively on the web. I have not found any solutions being offered. True, I have not found many people posting the same problem, but those that have, there has not been a single solution offered. Only the alternative that you suggested.
I may have to go that way (using the system tray), but frankly it is a bug in .NET. I run other programs that do not have a border and yet can show a taskbar button with an icon (and a menu).
| | plevintampabay Sunday, January 06, 2008 2:39 AM | I think there might be a solution. Read the first post in this thread: http://www.msdner.com/dev-archive/180/2-8-1806474.shtmIt suggests to leave the form with a title bar, and remove it afterwards, by modifying its createparams. Hope this helps. Regards | | Marcel Nita Sunday, January 06, 2008 2:48 AM | Very interesting.
I gave that a try, and I still do not have an icon in the task bar button, but I do have the pop up menu there. So I'll use this bit of code.
Regarding the icon problem, I discovered that it is OS specific. On Windows 2000, I do not get an icon for the borderless form. On XP, I do get the correct icon. On Vista, I get an icon, but it does not look correct (as it does on XP). However, even with a border, the icon does not look correct on Vista, so that may not be relevant. Since it works on XP, which is my target environment, I may have to just accept that it does not work on Win 2K, which is my development machine.
Thanks for all your help. If you find any other relevant solutions/work arounds, I would love to see them. It would be nice for it to work on all OS's. | | plevintampabay Sunday, January 06, 2008 9:10 PM | Problem solved.
The problem was my ico file. I only had a 32x32 (true color + alpha) image in the ico file. This worked fine on all OS's (Win2K, XP and Vista) so long as I had a border on the form. But when I went to no border, it did not work for Win2K and Vista.
I created an ico file with 16x16, 32x32, 48x48, and 256x256, all true color + alpha. Now I have the icon in the taskbar button on all OS's (for the no border form). I could not tell you which of the icon images is being used where, but I don't care. They were simple enough to create and the problem is solved.
Along with the bit of code obtained from the link given by "marcel nita" (see post above), I now have a borderless form with a taskbar button that has the icon and menu.
Thanks for your help "marcel nita".
Paul
| | plevintampabay Monday, January 07, 2008 4:17 AM |
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