API to toggle "Show hidden files, folders and drives" - c#

Is there a function in Windows API to toggle the "Show hidden files, folders and drives" option in Windows Explorer (Tools >> Folder Options... >> View tab).
I know of a related registry key, but changing that would not have immediate effect. The key is: HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/Explorer/Advanced/Hidden
Trying to do this from C#, but the question is not language-specific.

You could try the options the OP in this thread suggests, that is:
Either
SendNotifyMessage(HWND_BROADCAST, WM_SETTINGCHANGE, 0, 0);
or
RefreshPolicyEx(False, RP_FORCE);
or
SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, integer(pchar('Policy')), SMTO_NORMAL or SMTO_ABORTIFHUNG, 5000, c1);
These are not in the .NET C# API, so you'll have to use DllImport
Edit: formatting

In addition to the comment I've added to the original question - if you're doing this so that, for instance, the OpenFileDialog you're about to pop open shows these files - don't do it.
In that case, you're better P/Invoking GetOpenFileName, and setting the appropriate option (OFN_FORCESHOWHIDDEN (see enum for a related subject) in the flags of the OpenFileName structure.
That way you're only affecting your application, at the appropriate time

I know of no API, but the registry key is HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Hidden. From experimentation, it seems a value of 1 means show and a value of 2 means hide.

SHGetSetSettings
SHELLSTATE Structure
fShowAllObjects
BOOL
TRUE to show all objects, including hidden files and folders. FALSE to hide hidden files and folders.
fShowSysFiles
BOOL
TRUE to show system files, FALSE to hide them.
Spy++ says a WM_SETTINGCHANGE is sent to the explorer windows.

Related

Check if the current document in Visual Studio 2012 is a Code Window

I am looking for a way to have my extension check if the currently opened window in visual studio 2012 is one, where the user can write code (or any kind of text, really).
To check if the currently opened window has changed, I use
_DTE.Events.WindowEvents.WindowActivated.
This gives me the EnvDTE.Window that received the focus.
When I look at the properties of that window while debugging, and I look at EnvDTE.Window.Document.Type and it's value is "Text".
However, if I stop debugging and try to access the Document.Type property, it does not exist.
If I look for this property in the documentation of EnvDTE.Window.Document, its description says
Infrastructure. Microsoft Internal Use Only.
So now I am looking for any advice on how I could check if the currently active window is one, where I can write code (or anything else), or some other kind of document (like the solution properties for example).
Edit:
I also tried checking Window.Type and Window.Kind of the active window, but they just tell me that it's a document, not making any differentiation between a resource file, an image file or an actual source file, which is what I'm trying to find out.
Edit²:
The reason why I want to check if the current document is one where I can write code in, is because I want my extension to store information about some of those documents and I want to modify the right-click context menu based on the information I have stored, if any.
It is not a "real" answer, but you can follow status of VS GoTo command - it is available only for text editors:
bool isCodeWindow = IsCommandAvailable("Edit.GoTo");
private bool IsCommandAvailable(string commandName)
{
EnvDTE80.Commands2 commands = dte.Commands as EnvDTE80.Commands2;
if (commands == null)
return false;
EnvDTE.Command command = commands.Item(commandName, 0);
if (command == null)
return false;
return command.IsAvailable;
}
You can check to see if the document is a 'TextDocument'
bool isCodeWindow = dte.CurrentDocument.Object() is EnvDTE.TextDocument;

Using Coded UI to Simulate File Drag and Drop Operation

I have a WinForm application which is a drop target for files and folders. I'd like to use Coded UI to have an automated tests that verifies the application does what I think it should do when files were dropped on it.
I used the Coded UI recorder to record this operation, but I need to generalize it and make it work on CI server. So I basically want to init the test with some pre-setup file paths (the files can be created as part of the test setup), and then just trigger the drop event passing in the paths to those files on the file system.
Coded UI records the test but produces a test like:
WinListItem uIContactcshtmlListItem = this.UIProgramManagerWindow.UIDesktopList.UIContactcshtmlListItem;
WinText uIDragDropFilesHereText = this.UIMyApp.UIDragDropFilesHereWindow.UIDragDropFilesHereText;
uIDragDropFilesHereText.EnsureClickable(new Point(84, 13));
Mouse.StartDragging(uIContactcshtmlListItem, new Point(17, 35));
Mouse.StopDragging(uIDragDropFilesHereText, new Point(84, 13));
The "uIContactcshtmlListItem" appears to represent the source files I dropped. (A contacts.cs file happens to be one of the things I dragged/dropped during the recording.) I want to replace this with just some file paths, but this appears to essentially be a list item type control from Explorer.
Is there a way to accomplish what I want? Perhaps by creating a WinListItem in the code manually?
This is how I would do it (requires some coding):
Record opening a windows explorer, writing in the address bar and pressing enter. Then record dragging a file to your application (drag it by its icon to avoid future frustrations). Add your assertions. Record closing the windows explorer. These should be four methods plus the assertions: open explorer, set address, drag file, close explorer.
Now you have your base methods. Call the method that opens the explorer first then loop thru your input file paths. In the loop: set the parameters for the 'set address' and 'drag files' methods for the file (you can check the current directory in the explorer and only call 'set address' if needed) and the name search property for the ListItem UIControl (the control/file you want to drag). Call Find() on the ListItem/Image UIControl or set AlwaysSearch for this control in the UIMap (you need this because we are reusing a UIControl here which is cached on a previous object) then call the 'drag file' method. Then check your assertions.
Finally call the 'close explorer' method. You will probably have to tweak around a bit in the UIMap to make things work properly (change search properties and stuff).
Of course this is not the only way to do it, not the best either but might be a good start.
Change the search parameter
WinListItem uIContactcshtmlListItem = this.UIProgramManagerWindow.UIDesktopList.UIContactcshtmlListItem;
WinText uIDragDropFilesHereText = this.UIMyApp.UIDragDropFilesHereWindow.UIDragDropFilesHereText;
uIContactcshtmlListItem.SearchProperties.Remove(UITestControl.PropertyNames.Name);
uIContactcshtmlListItem.SearchProperties.Add("Name", "ItemName" or variable);
or uIContactcshtmlListItem.SearchProperties.Add("Name", "PartOfTheName", PropertyExpressionOperator.Contains);
uIDragDropFilesHereText.EnsureClickable(new Point(84, 13));
Mouse.StartDragging(uIContactcshtmlListItem, new Point(17, 35));
Mouse.StopDragging(uIDragDropFilesHereText, new Point(84, 13));

How can you programmatically detect if javascript is enabled/disabled in a Windows Desktop Application? (WebBrowser Control)

I have an application which writes HTML to a WebBrowser control in a .NET winforms application.
I want to detect somehow programatically if the Internet Settings have Javascript (or Active Scripting rather) disabled.
I'm guessing you need to use something like WMI to query the IE Security Settings.
EDIT #1: It's important I know if javascript is enabled prior to displaying the HTML so solutions which modify the DOM to display a warning or that use tags are not applicable in my particular case. In my case, if javascript isn't available i'll display content in a native RichTextBox instead and I also want to report whether JS is enabled back to the server application so I can tell the admin who sends alerts that 5% or 75% of users have JS enabled or not.
Thanks to #Kickaha's suggestion. Here's a simple method which checks the registry to see if it's set. Probably some cases where this could throw an exception so be sure to handle them.
const string DWORD_FOR_ACTIVE_SCRIPTING = "1400";
const string VALUE_FOR_DISABLED = "3";
const string VALUE_FOR_ENABLED = "0";
public static bool IsJavascriptEnabled( )
{
bool retVal = true;
//get the registry key for Zone 3(Internet Zone)
Microsoft.Win32.RegistryKey key = Registry.CurrentUser.OpenSubKey(#"Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3", true);
if (key != null)
{
Object value = key.GetValue(DWORD_FOR_ACTIVE_SCRIPTING, VALUE_FOR_ENABLED);
if( value.ToString().Equals(VALUE_FOR_DISABLED) )
{
retVal = false;
}
}
return retVal;
}
Note: in the interest of keep this code sample short (and because I only cared about the Internet Zone) - this method only checks the internet zone. You can modify the 3 at end of OpenSubKey line to change the zone.
If you are having troubles with popups popping up, i've included a solution for you, and if you want to disable/enable javascript on th client machine (or even just read/query if it is enabled/disabled) ive included that answer for you as well, here we go:
Which popup message do you want to disable? If it's the alert message, try this, obviously resolving the window or frame object to your particular needs, I’ve just assumed top-level document, but if you need an iframe you can access it using window.frames(0). for the first frame and so on... (re the JavaScript part)... here is some code, assuming WB is your webbrowser control...
WB.Document.parentWindow.execScript "window.alert = function () { };", "JScript"
You must run the above code only after the entire page is done loading, i understand this is very difficult to do (and a full-proof version hasn't been published yet) however I have been doing it (full proof) for some time now, and you can gather hints on how to do this accurately if you read some of my previous answers labelled "webbrowser" and "webbrowser-control", but getting back to the question at hand, if you want to cancel the .confirm JavaScript message, just replace window.alert with window.confirm (of course, qualifying your window. object with the correct object to reach the document hierarchy you are working with). You can also disable the .print method with the above technique and the new IE9 .prompt method as well.
If you want to disable JavaScript entirely, you can use the registry to do this, and you must make the registry change before the webbrowser control loads into memory, and every time you change it (on & off) you must reload the webbrowser control out and into memory (or just restart your application).
The registry key is \HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\ - the keyname is 1400 and the value to disable it is 3, and to enable it is 0.
Of course, because there are 5 zones under the Zones key, you need to either change it for the active zone or for all zones to be sure. However, you really don't need to do this if all you want to do is supress js dialog popup messages.
Let me know how you go, and if I can help further.
Here is a suggestion - Encode the warning into your webpage as default. Create a javascript that runs on page load which removes that element. The warning will be there when ever javascript is not allowed to run.
It's a long while since I coded client side HTML javascript to interact with the DOM so I may be a little out of date. i.e. you will need to fix details, but I hope I get the general idea across.
<script>
document.getElemntByID("noJavascriptWarning").innerHTML="";
</script>
and in your HTML body
<DIV id="noJavascriptWarning" name="noJavaScriptWarning">Please enable Javascript</DIV>

How to get the (.lnk) shortcut filepath in a program which started by the shortcut?

I have a c# program which open *.postfix file.
If a user runs a (.lnk)shortcut which points to my type of file, my program will open the target.
So, how could my program know it is started by a (.lnk)shortcut (and get it's file path)?
In some circumstances,i need to replace the .lnk file.
Thanks!
Edited
First, thanks to guys who answered my question.
By following #Anders answer, i find out my problem lays here.
I made some changes to windows registry, so browser knows to throw customized protocol string to certain program.
some thing like this..
[InternetShortcut]
URL=myProtocol://abcdefg.....
That's maybe why i lost lpTitle. :(
I'm going to try this way:
Whenever my program invoked, of course fed with %1, program checks current opened explorer(Window), and try to get it's current path with IWebBrowserApp. With that path and desktop of course, scan and analyze *.lnk to determine which one to replace.
I think this will probably work, but not be sure. I will try.
continued
In native code you can call GetStartupInfo, if the STARTF_TITLEISLINKNAME bit is set in STARTUPINFO.dwFlags then the path to the .lnk is in STARTUPINFO.lpTitle. I don't know if there is a .NET way to get this info, you probably have to P/Invoke...
You don't. There's no way to do it. End of story.
So this has been brought to my attention due to a recent downvote. There's an accepted answer showing an idea that gets the path to the launching shortcut most of the time. However my answer is to the whole. OP wants the link to the shortcut so he can change it. That is what can't be done most of the time.
Most likely case is the shortcut file exists in the start menu but is unwritable. However other cases involve the shortcut coming from another launching application that didn't even read it from a disk but from a database (I've seen a lot of corporate level restricted application launch tools). I also have a program that launches programs from shortcuts not via IShellLink but by parsing the .lnk file (because it must not start COM for reasons) and launching the program contained. It doesn't pass STARTF_TITLEISLINKNAME because it's passing an actual title.
If you're using Visual Studio Setup Project to build an installer and do the file type association, you should follow these instructions http://www.dreamincode.net/forums/topic/58005-file-associations-in-visual-studio/
Open up your solution in Visual studio.
Add a Setup Project to your solution by file , add project,New project, Setup & Deployment projects,Setup project
Right-click on your setup project in the "Solution Explorer" window,Select view,then select file types.
you'll see the "file types" window displayed in Visual studio.At the top of the window will be "File types on target machine"
Right-click on "File types on target machine".the menu will pop up with Add "file type" Click on this.
you'll see "New document Type#1" added,and "&open"underneath it.
The "new document type#1" can be anything you want - change it to something descriptive.although the user never sees this,never use something common- be as unique as possible,Because you can overlay current file associations without even realizing it.For example,you might think"pngfile" might be a useful name- but using that will now send all"*.png" files to your application,instead of to an image viewer.A good practice maybe "YourCompantName.Filetype",where your company name is your name of your company's name, and "Filetype" is a descriptive text of your file.
In the "properties" window for your new type,you will need to change a few properties.:
Command:Change to the application that you want to run.If you click on the "..." and you will proberly want to locate and use the "primary Output..." File
Description: This is the description of the file type(if it doesn't describe it's self"
Extensions:This your list of extensions for you chosen Program.Separate each one with a ","
Icon:This will associate the icon with your file type,This shows up in the window explorer.
Now we move to that "&open ".This is an action that is available if your right-click on the file.The default action("&Open" is currently set as the default) is what happens when you double click on the file.Right click on your "New document type#1" to add actions,but for the moment,lets define our "&open" action
Click on "&Open".You will see in the properties window "Name","Arguments","Verbs". Verb is hidden from the user,but is the key that is stored in the registry.Leave it same as the name,But without the "&".The default for"Arguments" is "%1",Which means to pass the full path and filename to your application.You can add other stuff here as well,if you need to pass flags to your application to do special stuff.All this infomaton is getting passed to your application on the command line,so you'll need to be familiar with the "Environment.CommandLine" object.
If you need to set a different action as your default,just right click on the action and "set as default"
Basically, you'll pass the file path as an argument to your program. Then if it's a console application or Windows Forms , you should check the arguments in Program.Main
static void Main(string[] args)
{
//if file association done with Arguments %1 as per forum post above
//you file path should be in args[0]
string filePath = null;
if(args != null && args.Length > 0)
filePath = args[0];
}
For a WPF application you'll need to handle that in the StartUp event for your Application
void App_Startup(object sender, StartupEventArgs e)
{
string filePath = null;
if ((e.Args != null) && (e.Args.Length > 0))
{
filePath = e.Args[0];
}
}

How to read in text from the visual studio debug output window

I've read several articles that tell you how to add text to the output window in visual studio from within an Add-On (specifically, a visual studio 2008 integration package, via the visual studio 2008 SDK 1.1), but no examples of how to read text from the output window. My goal is to parse text from the debug output window while debugging a certain application (TRACE output and possibly stdin/stdout). The IVsOutputWindowPane interface has no methods for reading in text from the output window. The documentation seems to imply that it is possible, but it doesn't provide an example:
http://msdn.microsoft.com/en-us/library/bb166236(VS.80).aspx
Quote: In addition, the OutputWindow and OutputWindowPane objects add some higher-level functionality to make it easier to enumerate the Output window panes and to retrieve text from the panes.
Preferably I'd like to be able to subscribe to an event that fires when a new line of text arrives, similar to a StreamReader's asynchronous reads.
It is possible, it is just a long winding path to get to it:
ServiceProvider -> IVsOutputWindow -> GetPane( debugwindow ) -> IVsUserData -> GetData( wpftextviewhost ) -> IWpfTextViewHost -> IWpfTextView -> TextBuffer -> Changed event.
Presuming you have a VS IServiceProvider from somewhere else (vsix extension/whatever, global service provider), and without any error checking, it looks like this:
IVsOutputWindow outWindow = ServiceProvider.GetService(typeof(SVsOutputWindow)) as IVsOutputWindow;
Guid debugPaneGuid = VSConstants.GUID_OutWindowDebugPane;
IVsOutputWindowPane pane;
outWindow.GetPane(ref debugPaneGuid, out pane);
// from here up you'll find in lots of other stackoverflow answers,
// the stuff from here down is interesting to this question
IVsUserData userData = (IVsUserData)pane;
object o;
Guid guidViewHost = DefGuidList.guidIWpfTextViewHost;
userData.GetData(ref guidViewHost, out o);
IWpfTextViewHost viewHost = (IWpfTextViewHost)o;
IWpfTextView textView = viewHost.TextView;
textView.TextBuffer.Changed += YourTextChangedHandlerHere;
Your text changed handler will then get called every time the output window gets more data. you won't necessarily get it line by line, but you'll probably more likely than not get big chunks you'll need to deal with on your own.
It is highly likely that some of the above did not even exist in VS in 2010. But it exists now!
The default behavior (when you don’t set the listener explicitly) of VS is to display trace massages in the debugger output window, which you appreciate if you want a simple solution and do no other actions with the massages.
Unfortunately this is not your case. So you have to define a trace listener to send (and store) your trace massages where you then will be able to read them. The trace listener could be a file (for example XML) or you can create a custom listener by deriving a class from the base class TraceListener if you don't want to bother yourself with an additional file.
I don't know that what you ask is possible. But, you can register your add-in as a debugger for your application so that you get the output the trace messages. These are typically routed to OutputDebugString, and can be captured as described in this article: http://www.drdobbs.com/showArticle.jhtml?articleID=184410719. It does not give you the normal output, only debug, but it does not depend on the technology of the debugged application.
The solution on this page selects the text in order to read it. I'm hoping there's a better way.
Automatically stop Visual C++ 2008 build at first compile error?
Private Sub OutputWindowEvents_OnPaneUpdated(ByVal pPane As OutputWindowPane) Handles OutputWindowEvents.PaneUpdated
pPane.TextDocument.Selection.SelectAll()
Dim Context As String = pPane.TextDocument.Selection.Text
pPane.TextDocument.Selection.EndOfDocument()
End Sub

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