Override The "always On Top" Property Of The Windows Taskbar?
Sep 24, 2005
I'm writing a windows application in VB.net that I would like to give to other users. I've discovered that the Maximized appearance at runtime of my startup form is partially obscured at the bottom by the Windows taskbar if the user has set the property (via Control Panel) of the Windows taskbar to be "always on top" of other programs.I need the full client area of my start-up form to display various pieces of information, and an always-on-top Windows taskbar obscures some of that info. Is there a way, programatically, that I could turn off the always-on-top property of the Windows taskbar for the duration of my application, and then restore it to its original property setting as my application is closing?I know that I could just simply advise the user to go to the Control Panel, select display, etc. etc., and have him change the taskbar setting before and after using my application, but surely there is a programatic way to accomplish the same? I'm adding this postscript a day or so later. I've noticed that setting the TopMost property of my startup form (and setting the Size property to be large enough) will cover the Windows taskbar as desired. However, this is not useful to me. I want to be able, later in the program, to use the Show method of a DialogBox that keeps the DialogBox on top of the StartUp form even when I put the focus back on the startup Form (basically I want the user to be able to click on an item on the DialogBox, then click on an item on the startup Form, then click again back on the DialogBox, and so on, without the Dialog Box ever disappearing behind the startup Form). So the TopMost property of the startup Form doesn't help me, since it would hide the DialogBox as soon as the DialogBox loses focus. I would really prefer to issue a command, as mentioned above, that turns off the TopMost property of the Windows taskbar.
How to override the SelectedItem property? When you look at the description of the SelectedItem property, the description shows as:"Gets the selected item with the lowest index in the list control". I would like to bypass the "lowest index" portion of the property...I have multiple items in the same list with the same value, but different text. I just want to set the SelectedItem to the actual item I've selected, not one with the same value that appears earlier in the list...
In my project, I have a table that has an image column, but with vs2008 it stores the image as bytes. I have the column set to allow nulls. When I save my image I convert it to a byte array. Then when I retrieve that row, I convert the byte array back to the image, no problems. The problem is when there is not an image selected I return Nothing to the datatable, saves ok, but when I try to retrieve that row, The dataset.desinger throw the "value in column dbnull". I can temporary override this error with a code change in the dataset.designer, but it does not stay permanently. How can I override the dataset.desinger property permanently.
Original dataset.desinger code: <Global.System.Diagnostics.DebuggerNonUserCodeAttribute()> _ Public Property Image() As Byte() Get Try Return CType(Me(Me.tableCustomers.ImageColumn),Byte()) [Code] .....
All I did is add the if statement capturing the dbnull and forcing it to return Nothing instead. When I close VisualStudio, then reopen this change is gone. How can I keep this or override it.
I just start working with VB. In a programme I need to keep the value in text property after programme closed.That is why I want to change (override) Text property in TextBox.Then this value will be default value when I open the programme again.I will assing a value to textbox1 in a Sub.
Sub button1_click Textbox1.text="ttt" End Sub
Then I need to change the Text value under "Properties" window.TextBox1 System.Windows.Forms.TextBox
I think there is Get-Set method for property override but I dont know how to use.How can I do that?
I have a usercontrol with a picturebox and a few buttons related to it, such as LoadFromFile, Paste and Zoom (that last one pops up a new form). Is there a way to override the basic Enabled property of the usercontrol so that I can keep the Zoom button active all the time, while turning off the other buttons?
I realize there are 2 "obvious" replies. don't do Enabled=False, create a custom method. do everything in the one form, not a usercontrol, so you can pick and choose disabling. Both are less than ideal, given that I'm putting this control into a couple of existing forms, so I'd like to work around how those forms already behave. So is there a way to override the behavior of my usercontrol when it gets disabled? What would be my best strategy?
I am using Linq to Sql that generated a data contract for a table. I have a date field in that table which is a non-nullable field. I need to override the auto generated property of the date field to return a specific value, something like [code]Is it possible to override an autogenerated property in the designer.vb file using a partial class? I dont want to create a new property as it is currently being accessed in n number of places and I dont want to change it in every place.
I would like to overrides the datetimepicker object to remove the texte when the property _clearOnDisabled is true. When _readOnly property is true, I would like to show the text in black not gray. So I tried with WndProc but I seem that every single object go through my function not only my datetimepicker. I get 100% CPU when I put the WM_PAINT message. I also tried to overrides the OnPaint but its not getting in.
I have searched high and low but cannot find any info on how to add a textbox into the Windows taskbar - like the Windows Search does? I want to make my own search tool and have a textbox show up there in the Windows taskbar just like the windows search does. Has anyone got or sample code to do this?
I want a supervisor override capability for my application.I want to provide a username login prompt (including domain). If the user is in the approved list and the password correct, show advanced controls.What .NET code / functions allow this?
NOTE: VB.net answers preferred. C# also accepted.
EDIT: the logged in user is not the user authorizing the override.
I have a program that has a main window, and a progression of other windows that all open from each other. I only want the main window to show in the taskbar, and I want to be able to minimize at any window, and have every window minimize to a single item in the taskbarThe problem is: when I set each form's 'SHOWINTASKBAR' to True, every form shows in the taskbar instead of just one. If I set the 'SHOWINTASKBAR' property to False, they don't minimize to the taskbar.
I am making a Kiosk system and would like to recreate the Windows Taskbar in VB.NET, specifically the window management features of the taskbar: displaying open windows, switching between windows, and highlighting which window has focus. if the taskbar had the same positioning properties as the Windows Taskbar, in that even when other windows had focus the taskbar would still have focus and would not taking focus away from windows on the screen, and maximized windows would not maximize over the taskbar.
Windows 7 has a new feature which shows ProgressBar in TaskBar.There's a Windows API released by Microsoft which is a wrapper for .NET applications that allows .NET developers use these functions in their apps.I am not going to use it and just wanna know if there is any new functions in .NET Framework 4.0 RTM which allows us to use such functions naively in .NET?
Any open src code or a freeware app to ungroup some task bar windows? I want to be able to ungroup all windows started by firefox.exe but leave other windows grouped so they are now. I have XP so this is not there in explorer natively.
I'm writing an application that I want to keep status text always on the taskbar. Some programs like Windows Media player create a toolbar that can be added to the taskbar. Is there a way to do this in VB.NET, and if so how ... ?
I can create a notifyicon, and although it can be used to display notifications I need the text information to always be displayed... I could have used different icons to show a change in status in the notifytray but I really need text to display the status.
I saw an application for cashier system in a certain store. I noticed that while the application was running, the window form of their application occupies the entire screen and the windows taskbar seems to be hidden. I'm just curious how did they hide the windows taskbar? Do they hide the taskbar in a manual settings on their computer before the application was launched? If not, how did they make their application capable of hiding the taskbar? Please put a detail code if applicable. I just want to know how to hide the taskbar when you launch the application and put it back when you exits the application as well.
I saw an application for cashier system in a certain store. I noticed that while the application was running, the window form of their application occupies the entire screen and the windows taskbar seems to be hidden. I'm just curious how did they hide the windows taskbar? Do they hide the taskbar in a manual settings on their computer before the application was launched? If not, how did they make their application capable of hiding the taskbar? I just want to know how to hide the taskbar when you launch the application and put it back when you exits the application as well.
I asked a question earlier asking how to use the Windows 7 taskbar progress bar without the .dll files, but I realized that in VS2010 you can embed a .dll into your application. I set this option to embed to true, but when trying to use the code for said .dll, I get this error: Interop type "Windows7ProgressBar" cannot be embedded. Use the application interface instead.
We have an application that self-updates using a Laucher.exe process which copies down new App.exe and DLLs from a server then runs them in a separate process. This was all working very well until the arrival of the Windows 7 taskbar... Problem is in Windows 7, if the user pins the Launcher.exe to the task bar (by right-clicking the shortcut to Launcher.exe) then this happens... When you start the program the "pinned" taskbar icon momentarily gets focus while the launcher is running but then a totally separate new icon appears when App.exe is running. If the user then decides to right click the icon from the running App.exe and pin that to the taskbar, they bypass the application update part of the process.
