How to send Ctrl/Shift/Alt + Key combinations to an application window? (via SendMessage)

Posted by user1792042 on Stack Overflow See other posts from Stack Overflow or by user1792042
Published on 2012-11-02T17:36:46Z Indexed on 2012/11/17 11:04 UTC
Read the original article Hit count: 299

Filed under:

c#

|

sendmessage

I can successfully send any single key message to an application, but don't know how to send combinations of keys (like Ctrl+F12, Shift+F1, Ctrl+R, etc..)

Tired doing this that way:

SendMessage(handle, WM_KEYDOWN, Keys.Control, 0);
SendMessage(handle, WM_KEYDOWN, Keys.F12, 0);
SendMessage(handle, WM_KEYUP, Keys.F12, 0);
SendMessage(handle, WM_KEYUP, Keys.Control, 0);

but this doen not seems to work.. (application act like only F12 is pressed, not Ctrl+F12)..

Any ideas how to make this work?

© Stack Overflow or respective owner

Related posts about c#

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test… >>> More

Related posts about sendmessage

Can't send key to window with SendMessage

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm writing a C program under Windows that should send an ENTER key to a dialog box to close it automatically. I retrieve the handle to the top level window I'm interested in (by means of EnumDesktopWindows()) and then try to send an ENTER key using SendMessage (note also that closing the window… >>> More
Explanation of SendMessage message numbers? (C#, Winforms)

as seen on Stack Overflow - Search for 'Stack Overflow'
I've successfully used the Windows SendMessage method to help me do various things in my text editor, but each time I am just copying and pasting code suggested by others, and I don't really know what it means. There is always a cryptic message number that is a parameter. How do I know what these… >>> More
SendMessage vs. WndProc

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to extend TextBox control to add watermarking functionality. The example I've found on CodeProject is using imported SendMessage function. [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)] static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, uint wParam, [MarshalAs(UnmanagedType… >>> More
IPC using SendMessage but receiver have random window caption

as seen on Stack Overflow - Search for 'Stack Overflow'
I found "Delphi Inter Process Communication (IPC) using SendMessage" with Google. Here's a piece of the code from Sender to send a message for Receiver : procedure TfrmClient.FormCreate(Sender: TObject); begin MyMsg := RegisterWindowMessage('MyMessage'); ServerApplicationHandle := FindWindow('TApplication'… >>> More
How to popup menu using SendMessage?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello! I have pop-up menu, for example: "..." "PopUp-menu" "Menuitem1" "Menuitem2" "..." How to popup "PopUp-menu" using SendMessage function? Is it possible? course Menuitem has ID, and POPUP menu - has not >>> More