[Help] Get rdPtr from WindowProc function

Hello all developers. ;)

For one of my extension I would like to get the rdPtr from the "WindowProc" function...
I imagine to store the rdPtr in global data thanks to "mvSetExtUserData" and then get it with "mvGetExtUserData" but I don't know how to use this function and how to get :
- CRunApp* pApp application
- HINSTANCE hInst HINSTANCE of my extension object

Is somebody can help me by put a part of code where mvGetExtUserData(...) is used from "WindowProc" function ?

Or maybe another solution to get the rdPtr from "WindowProc" ?

Thanks :)

There is a GetRdPtr function right above windowproc...
You can use it like this:
if ( (rdPtr = GetRdPtr((HWND)lParam, rhPtr)) != NULL && rdPtr->rHo.hoIdentifier == IDENTIFIER )

Yes, just declare a RUNDATA pointer like so:

Quote:

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LPRDATA rdPtr;

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and then use the code which can be found in the SDK documentation:

Quote:

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if ( (rdPtr = GetRdPtr((HWND)lParam, rhPtr)) != NULL && rdPtr->rHo.hoIdentifier == IDENTIFIER )

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My object don't have any window so, I must get the rdPtr without GetRdPtr function...

Thanks for the help

Throwing a idea, you could always have a invisible window.. :)
Hard to help when one doesn't know what you are trying to make :P

I only want to get some windows messages.

I don't want an invisible window...

So my question is how can I use mvGetUserData from WindowProc function ?

I think for EasyCom I did something like this in the CreateRunObject:

Code:

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SetProp(rdPtr->rHo.hoAdRunHeader->rhHEditWin,"rdata",(HANDLE)rdPtr);

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In DestroyRunObject I do something like:

Code:

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        RemoveProp(rdPtr->rHo.hoAdRunHeader->rhHEditWin,"rdata");

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And then in my WinProc I do:

Code:

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rdPtr = GetRdPtr(hWnd, "rdata"))

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but I use a custom GetRdPtr function which you might want to name something else:

Code:

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LPRDATA GetRdPtr(HWND hWnd, char*mPropName)
{
                return (LPRDATA)GetProp(hWnd,(LPCSTR)mPropName);
}

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Thanks a lot Vortex2, I'll try this asap ! :)

vortex2, after the :

Code:

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LPRDATA rdPtr = GetRdPtr(hWnd, "rdata");

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I try to access a value of my rdPtr but at this moment MMF2 crash :

Code:

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LRESULT CALLBACK DLLExport WindowProc(LPRH rhPtr, HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
{
        LPRDATA rdPtr = GetRdPtr(hWnd, "rdata");
        rdPtr->myValue = 1;
        return 0;
}

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rdPtr->myValue is an int...

WindowProc is called for both hMainWin and hEditWin, you should do a GetRdPtr(rhPtr->rhHEditWin, "rdata"); instead of GetRdPtr(hWnd, "rdata");.

Thanks Yves for this so quick answer ! It works pretty well now ! :)

Ah, I will fix that in my extension as well.

My extension doesn't crash because I check the rdPtr for NULL and I use it inside of a message that is only dispatched to the window that I set the property for.

IE:

Code:

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        case WM_COMM_CTS_DETECTED:
        if ((rdPtr = GetRdPtr(hWnd, "rdata")) != NULL && (IDENTIFIER == rdPtr->rHo.hoIdentifier))
        {
                        rdPtr->mCurPort=lParam;
            callRunTimeFunction(rdPtr, RFUNCTION_GENERATEEVENT, CND_CONONCTS, 0);
            // Intercept the message
            return REFLAG_MSGHANDLED;
        }                   
                break;

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