How to SendInput without using User32.dll

Daniel Chan

Is there any other way SendInput without using User32.dll? Is there other DLL file same usage as user32.dll which provided by .NET framework?

There is a SendInput function inside Microsoft.VisualBasic.DLL but it still call back User32.dll.

As i know GetPixel can be done using GDI32.DLL from windows and SYSTEM.DRAWING.DLL from .NET Framework.

Please help me on this.

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

savan gandhi19y ago
Hi, SetForeground can be used under situations where the end user is not interacting with the windows. I mean, SetForeground & sendkeys combination can be used only if user is not interfering with windows applications. What would happen if your code executed SetForeground and just before executing Sendkeys, the end user activates some other window. Your keys will go to that other application which can be disastrous.

Use Findwindow and SendMessage combination instead, where you can direct your keys to the particular window, you are interested in.

I don't know how to send keys by using SendMessage function. But it is for sure, that you can achive desirable results with this combination.
Alan19y ago
The .NET framework equivalent is the SendKeys class (in System.Windows.Forms) which has Send() and SendWait() methods:

http://msdn2.microsoft.com/en-us/library/system.windows.forms.sendkeys(VS.80).aspx

However, these methods still call the SendInput() API function 'under the hood'.

Also, if you're trying to send keystrokes to another window, you still have to use API functions such as FindWindow() and SetForegroundWindow() to force the focus onto that window first and these functions reside in user32.dll as well.