Clear Filters
Clear Filters

import user32.dll and use the 'BlockInput' function in it

6 views (last 30 days)
Hi,
I am sending a series of keystrokes to the notepad application from Matlab and through the total process I would like to lock the user input form both keyboard and mouse till the process completes and then release the lock. I found that there is a function called 'BlockInput' MSDN function in 'user32.dll'. So I am trying to import this dll into Matlab and use the function but I am getting the following error when I am trying to load the dll using 'loadlibrary' command.
loadlibrary('"C:\WINDOWS\system32\user32.dll"','winuser'); Warning: The library class 'user32' already exists. Use a classname alias.
Any guidance is appreciated.
Thanks, Krishna.

Accepted Answer

Krishna
Krishna on 3 Feb 2012
I created a dll in VB dotnet for the required function 'BlockInput'. I registered the created dll in Matlab using RegAsm.exe . Once I registered the dll in Matlab I created a COM component using 'actxserver' command. Then I could use the methods in the COM component and I got it working :) .

More Answers (5)

Krishna
Krishna on 10 Jun 2011
Sorry about repeating the question.. I am getting 0.. I guess this means the library is not loaded..

Kaustubha Govind
Kaustubha Govind on 10 Jun 2011
Try:
addpath('C:\WINDOWS\system32\')
loadlibrary user32 winuser.h
If you continue to see the same error, try:
loadlibrary user32 winuser.h alias user32lib
  1 Comment
Vishnu
Vishnu on 25 Jan 2015
Matlab removed my previous post, here is my new post with source code..
And to my knowledge the loadlibrary method I followed is undocumented...

Sign in to comment.


UT
UT on 3 Feb 2012
Hi Krishna,
Did you find out what was the problem?

Ignacio
Ignacio on 23 Oct 2014
Hi Krishna, I would like to disable temporality my keyboard and mouse through Matlab and I would like to know how did you do that.
Could you please post your solution or somehow send it to me?
Thanks!

Vishnu
Vishnu on 21 Jan 2015

Categories

Find more on COM Component Integration in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!