When starting our vba-access-application (which is done by a VBE-add-in which starts a VBA-function) we used to close the navigation-pane with this code:
DoCmd.SelectObject acMacro, "Autoexec", True
DoCmd.RunCommand acCmdWindowHide
As I started to use the built-in search/filter bar inside the navigation-pane, this code did not work anymore when the macro "Autoexec" is not visible. So I changed it to:
DoCmd.NavigateTo "acNavigationCategoryObjectType"
DoCmd.RunCommand acCmdWindowHide
This seems to work fine as long as there are any search results left. When I write "nothing with that name" inside the search bar(=the filter), the navigation pane will not close.
Does anyone know a way to close the navigation pane even if there is no search result visible?
DoCmd.NavigateTo "acNavigationCategoryModifiedDate"
DoCmd.NavigateTo "acNavigationCategoryObjectType"
DoCmd.RunCommand acCmdWindowHide
In order for the command DoCmd.RunCommand acCmdWindowHide to successfully close the Navigation Pane, the Navigation Pane must have the focus. But for an Access window to have the focus, a control within the window must have focus. It turns out that the NavigateTo command will never place the focus in the Search textbox, so if the search results are blank and there is nothing to select, then focus will not change to the Navigation Pane (even though technically the Navigation Pane's selected group may have been updated.)
If you play with the Navigation Pane long enough, you'll find that the Navigation search results and textbox are reset when switching between the highest-level Navigation categories. Hence my suggested code... it changes between two Navigation categories so that the search results are cleared during that action, so that the Navigation window will eventually gain focus when one of its listed objects finally gets focus.
(Really, using the NavigateTo command in this case is just a stupid trick to place focus on the Navigation Pane. It's just another glaring deficiency of the Access interface that there is no direct commands/objects for controlling the Navigation Pane.)
I suggest you don't write any code—but just use the built in Access settings to prevent (hide) the nav pane.
So work, then you hold down the shift key during startup.
(shift key by-pass).
The shift key development dance:
You will find that you can launch + develop a lot of code and work on forms/reports without having to exit.
However, you STILL will have done a shift key start-up bypass. The reason of course is that on start up, you code may well hide the ribbon. (Or launch a custom one). Same goes for start-up form—it may run a bunch of code, ask for logon, check table links.
And then there is the start-up settings you have. You likely have a start-up form (you don’t want that running). You likely have un-checked the display nav pane, but you need this during development. And what about if you have a custom ribbon? (Again a setting in tools→options). And use special keys—again turned off for users, but REQUIRED for developers.
And then there is the auto keys macro. This is used to re-purpose the F1 key (help—either disable or launch your own custom help—say a pdf or word file).
And any re-purpose such as say an f12 to popup some custom search box etc.
So, all of these custom setup is going to be rather LARGE amount of settings. Many will be from tools→options (main form, ribbon, etc.). And some will be from your code.
You REALLY (but REALLY) can’t code out all of these settings, and some require a re-start anyway. In a typical application there really going to be a lot of settings that are changed for your users vs you as the developer.
On start-up you thus hold down shift key. This will not only prevent your start up code from running, but ALSO your start up settings – even things like nav pane, and especially the tools→settings area (shift key ignores most of those settings).
So during a day of development, I will do this shift key dance all day long.
However, there are two tricks and shortcuts you can use here that will minimize this exit + re-enter down to a dull roar.
One great tick is to always place a custom compact repair button on the QAT. So QAT button is now ONE mouse click and always available to you. So if I am working on a form in design mode, flipping into view mode will often suffice, but in those cases where I need a full exit + re-start to test? I don’t even save the form, I just do a quick simple one click on that QAT compact + repair button.
One click! (Might have to answer yes to save). At this point, the application will re-start without you having to exit. And you don’t hold down the shift key—so all your start up settings run. You now flipped into user test mode, and it only took ONE mouse click.
This allows you to flip from developer mode and into “user test” mode with ease and only one mouse click.
So you can now run your application as it will appear to the end user.
To flip back into developer mode, just one simple click on your custom C+R button. (And you HOLD down shift key). This will flip you back into developer mode (you nav pane, your function keys, everything and all those start up settings are now ignored – you are free to develop without all those hassles and issues in your way). Full wide open use of Access as if no settings at all occurred.
And as noted, you get a c+r to boot, and you need + want to do that multiple times during the day anyway.
And as noted, for a good many changes, you not have to do this flip and can stay in developer mode.
Of course in some cases your “user mode” will REALLY lock down the Access and thus you have to exit (you lose the QAT trick). So you often be able to jump from developer to user, but not back the other way. Again, you not have to run + test everything in user mode all the time, but often some global variables, start up, password stuff will force this issue on you.
So, in this case?
I use a quick hit of alt+f4 to exit the application. AT this point, the accDB file should STILL be highlighted in the windows explorer. So, now it just a quick tap of the enter key to re-launch the accDB. And if wanting “user mode”, then simply don’t hold down the shift key. Do some testing, now alt+f4, and then a simple quick tap of the enter key (we back to the windows file explore and that accDB file is highlight). However, this time you WILL hold down the shift key, and thus you now back into developer mode.
And often, I will call my start up code before testing.
Ctrl+g (jumps to debug window), type in MyStartup
(MyStartup is assumed to be your first start up routine that does all that setup and THEN launches the main form – so in some applications I don’t use the built in start-up form setting, but use the autoexec macro to call my main start up routine (MyStartup)
So in a good many cases, I don’t have to exit Access to flip into test mode.
And of course some reports and forms can be used, viewed, developed on without having to full run the application with all that “user” start-up code stuff.
So some report might work, but then again it may well require some form to be open for it to work. (Or a system wide function and company name setting may be required + set in your start up code). So how badly you need to exit vs that of being able to do “some” development will often vary here.
So I will say that often I am forced to exit + re-load the application (alt+f4, tap enter key). So it only really 2 key combo to exit out and re-load/re-enter Access.
At the end of the day, if you can’t use that QAT shortcut suggestion, then you will exit + re-enter MANY MANY times during the day.
As noted, for a good number of forms etc., then you can flip between view and design mode. (But you of course be running access without all that start up crap stuff that prevents you the developer from working).
The simple matter is at the end of the day, there is going to be FAR MORE settings then just the nav pane (or lack of) that going to mess up your development process. So, the above shift key dance and QAT suggestion ALSO solves all of the OTHER many settings, and does so without you having to write one line of code to deal with this issue.
Of course, once all is working, then you will compile the application down to an accDE. And then apply the shift key by-pass code to that to lock the application further down.
I'm look for code which can help me accomplish what the title suggests.
I want this because I have an issue with a program which is quite buggy (it's a game), and if It freezes, and results in a black screen. Even after using Shift+Ctrl+Esc, Ctrl+Alt+Del, Alt+F4 and the rest of them, I acn't seem to end the program. So I thought that a KeyPress event would work, as it doesn't require me to use the UI in any way.
However, I've never used VB for anything other than Form's, so I have no idea how to start on something which runs in the background.
Thanks :)
A background app won't help in this case.
Ctrl+Alt+Del is specail key combo that is handled directly by Windows and can't be intercepted by a running program.
What this means is that if your game locks up and Ctrl+Alt+Del doesn't bring up the Windows menu, then the game has corrupted the system. The only fix at that point would be a restart.
That being said, you can kill a running process using VB.NET like this:
For Each program As Process In System.Diagnostics.Process.GetProcesses
If program.ProcessName = "ProcessName" Then
program.Kill()
End If
Next
Read more about it on the MSDN.
Okay, so Windows isn't actually locking up, but you just need some way to kill the process. Use the above code, replacing "ProcessName" with the name of your game process, and then either:
(basic) Turn the VB.NET code into an .exe file. Then set up a keyboard macro (using your keyboard software or some freeware) to launch the .exe you made which will kill all running instances of the given process. or...
(advanced) Import "user32.dll" into the VB.NET code, call SetWindowsHookEx with a hook id of 13, a pointer to a LowLevelKeyboardProc function, the handle to your running program, and a thread id of 0. Then, whenever a key is pressed in any program, your KeyboardProc function will be invoked. If the key(s) pressed match your desired kill-key combo, then run the above process killing code. This looks like it may give you more step-by-step instructions.
I have a Winforms app with a main form where a multiline text box is updated during a long running process.
I would like to be able to use the ALT-TAB facility of Windows to switch away from the Visual Studio 2012 IDE to watch the form being updated as the app runs.
Is there some option that controls this? If I have other apps running such as Notepad I can toggle away from the IDE but navigating in this way to the running Winforms app seems to be disabled.
Last time I debugged an app like this I recall this sort of switching worked but sometimes there was a lag in the rendering of the screen.
The winforms app is not multithreaded.
Any ideas?
The winforms app is not multithreaded.
Which means you're doing all your lengthy processing on the UI thread. And that, in turn, means that during that processing, your app is ignoring all the messages Windows is sending it, like the "hey, somebody just Alt+Tabbed to you, so bring yourself to the front" message.
You either need to sprinkle your code with frequent calls to Application.DoEvents (not recommended, but could work if you don't intend to maintain this app long-term), or move your long-running logic into a background thread so your UI thread can stay responsive to messages.
I have written a WinForms driver safety application for a windows tablet device that will blank the screen (display a full screen blank topmost window) when it detects that the car is moving at say more that 15km/h (using the tablets GPS).
The software has worked fine under Windows 7 but I'm struggling a bit to get it working under Windows 8. My first challenge is to display the blank screen when the Metro start menu is currently displayed. So if the user has the Metro start menu displayed and the car starts moving > 15 km/h my blank screen should display... I need to steal the focus from the metro interface and display my blank window on the desktop.
To test this I wrote a simple vb.net app in 2010. It had a form with a timer firing every 3 seconds. In the Tick event I had the code:
Beep()
Me.Activate()
When I ran this with the debugger and pressed the windows key to show the Metro Start Menu, it worked... The focus switched back to the desktop (and my window). However, when I ran this without the debugger and did the same thing I could hear the beeps but the focus never switched back to the desktop.
Any ideas why the behaviour would be different? Any ideas on how I replicate the same behaviour I get when the debugger is attached?
I have tried a few things like AppActivate, setting the form TopMost, BringToFront but unfortunately this hasn't worked.
The only half solution I have come up with is to send a windows button keystroke but this has other issues.
Windows specifically tries to prevent applications from stealing the foreground from other apps. See the SetForegroundWindow documentation for commentary on this and the factors that can let an application come to the foreground (all of the methods you are trying essentially come down to a SetForegroundWindow call).
Note that one of the explicit blocking circumstances is "The foreground process is not a Modern Application or the Start Screen."
This works for you when debugging because "The process is being debugged" is one of the cases which explicitly allows foreground privileges.
Because this is a generally user-unfriendly thing to do there isn't a good general purpose way to bypass this behaviour and steal the foreground.
Likewise, normal apps cannot run on top of Modern applications or the start screen.
You may be better off locking the system by calling the LockWorkStation function.
I have a panel in my nib file that opens on clicking menu item in my application
After performing some tasks on the panel , when I close the panel my application hangs .
Please suggest me the reason for it and any possible solution.
When I used separate nib files for my application and panel ,things worked correctly.
More information needed. But better yet, some debugging techniques so you can figure it out yourself:
hit "pause" in the debugger - where are you? Look at the backtrace/callchain to see what is going on.
Have you looked in the console window for any diagnostic messages?
Set a breakpoint on the code that is called when the close action for the panel is activated and then step through the handling and see how far it gets.
that ought to get you started.