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How to temporary block mouse and keyboard input to my application?

Posted on 2014-10-31
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Last Modified: 2014-10-31
How to temporary prevent users’ mouse and keyboard input to my application window, for instance, when the application is processing some data? I don’t want to use API BlockInput, as it completely blocks input to ALL applications, which is not good. I only need to block input to MY application, for instance in the manner: user hovers mouse over my app window, the cursor changes to Hourglass, and the mouse/keyboard input to my app window is disabled, until the processing is done, and input again explicitly enabled. Ideally, I should be able to specify handle to the window of my app I wish to block, or perhaps event to have option to block input to all windows belonging to my applications.
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Question by:npaun
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10 Comments
 
LVL 2

Expert Comment

by:Glen Richmond
ID: 40415474
use variations of enabled=true and false to make controls like text boxes and command buttons inaccesible.
i.e.
MyCommandButton.enabled=false
MyTextBox.enabled=false

then for the duration of the processing use screen.mousepoint=11 to show busy..

example of mouse pointer :-
http://support.microsoft.com/kb/71105
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Author Comment

by:npaun
ID: 40415484
well, that was an obvious approach... problem is, I have A LOT of controls on my form, and I would like not to have to disable/enable each and every of them... I'm looking for a more elegant solution, if there is a such...
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Expert Comment

by:Glen Richmond
ID: 40415487
well i guess im out!
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LVL 2

Expert Comment

by:Glen Richmond
ID: 40415490
you can use a for each to cycles through the controls and set the enable props without having to implicitly name them all..

for each ctrl in form.controls
     ctrl.enabled=false
next ctrl
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Author Comment

by:npaun
ID: 40415496
yes, I'm familiar with that approach too...
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LVL 2

Expert Comment

by:Glen Richmond
ID: 40415501
guess you dont need me then ... still a thanks wouldnt have hurt!
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Author Comment

by:npaun
ID: 40415512
thanks for the post
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LVL 5

Accepted Solution

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ReneD100 earned 2000 total points
ID: 40415557
I haven't used VB6 in forever, but can't you just use me.enabled to disable the whole form?
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Author Comment

by:npaun
ID: 40415576
it works, just perfect...
Well, this is a little embarrassing, I've never before had this need, and I simply overlooked the simplest possible approach... I never actually noticed before that the Form too has the Enabled property, nor used it... I simply jumped ahead I assumed there probably must be some convoluted approach... LOL
Thanks. Problem solved.
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LVL 5

Expert Comment

by:ReneD100
ID: 40415585
Haha, sometimes the solutions are very easy! I use it in Access sometimes to make sure users cannot make changes while stuff is being processed behind the scenes. VB6 and VBA aren't that far apart. Glad you got it going though!
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