Threading

  • Thread starter Thread starter Fredje
  • Start date Start date
F

Fredje

Hello,

I have the following problem:
I'm making a application that add at runtime usercontrols.
Each usercontrol have a function that converts a image.
This conversion takes a while and at the time the function is running the
applications blocks.
So I want to implement Threading but only for the moment this function is
running.
I have to pass arguments to the function like width, height,...

How can I prevent that the application doesn't block when this function is
running?

Thanks in advance.
 
You answered your own question: by starting a thread..

You can't send ThreadStart any arguments, so what most people do - is create
a class, that will do the thread work.. so in psuedo-code:

-create an instance of the threadworker class (call it objWorker)
-assign height, width, other properties to objWorker
-create a thread, and assign it to objWorker.DoWork()

hth
 
You can pass back created picture or controls to UI thread. Just remember,
that you can't update UI thread controls (main form) reliably from another
thread. Take a look at InvokeRequired and Invoke/BeginInvoke methods of
Control object.

HTH
Alex
 
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