Passing an Object to a PowerThread

[Neil Prichard]

I am having difficulty passing an object to a PowerThread object.

I wish to raed a file and keep the contents after being parsed in an object.

I create the ThreadParam object OK

I pass the object I want to store the data in OK

When I execute the thread however I get the following:

Exception: Memory Access Violation


If I create the object to store the data within the thread itself it is OK, but then I cant use the object with another thread.

Has anyone tried passing objects to PowerThread with success.

I am creating an object for the threadparam parameters and passing it OK.

The issue I have is with an object which is one of the properties of the object I pass as a prameter. The object itself has a property which contains a powercollection.

Cant post the code as restricted.

If anyone can suggest based on what I have said that would be good.

If not I will strip out a baseline sample and post that.



Can anyone help.

Kind regards,
Neil

[José Roca]

As PB initializes the COM library using single-thread apartment, you may need to

1. Call CoUninitialize
2. Call CoInitializeEx(NULL, &H0)

at the beginning of the program. &H0 is the value of the COINIT_MULTITHREADED constant.

See: https://docs.microsoft.com/en-us/win...coinitializeex

[Neil Prichard]

Thanks for the suggestion.

I will look into giving that a go at the weekend. As I will probably have to resort to Thread Create instead of PowerThread for that.

As the documentation suggests that the threading can only be set once this may be a problem using objects.

I do not know if the constructor would work in a PowerThread and secondly PB may have already set the threading before that.


Just to put the icing on the cake for me, I have created a test app. Which works. (?!?!?)

So I will try putting the real code back a bit at a time.

My code is dying on the launch of a PowerThread. Compiled it just dumps the app. Via debug I get the violation msg.

I will attach my testbed here just in case someone can suggest what I am doing wrong. (but the test works so ...mmm)



Well I was going to upload it but I cant upload the .PBrj project file or the res file. the forum wont let me.
The rest is there though.

[Stuart McLachlan]

Well I was going to upload it but I cant upload the .PBrj project file or the res file. the forum wont let me.
The rest is there though.

Why not upload a zip containing all the necessary files, that's the way most people do it if they have multiple files

[Neil Prichard]

Compelete Zip with all files.

Thanks Stuart