wParam referring to A STRING...

[vtalau]

I have a trouble like below description : My program has a dll file and a server application in the mydll.dll, I want to send a message to the server application. The message has the wParam referring to a string. I wrote my code : CString speak1; .... LPTSTR str = (LPTSTR)malloc((speak1.GetLength()+1) * sizeof(TCHAR)); ....//copy the data of the "speak1" to the "str" ::PostMessage(hMainWindow,WM_USER+1,(WPARAM)str,str.GetLength()+1); free(str) ; in my server application, I try to get the address of the string from the wParam. However, I can't get the content. Please, help me, point me to some pages or give me some intruction. Thanks a lot.

[Nibu babu thomas]

vtalau wrote:

::PostMessage(hMainWindow,WM_USER+1,(WPARAM)str,str.GetLength()+1); free(str) ;

Use SendMessage instead of PostMessage. Otherwise free(str) will get executed before the message is processed. As PostMessage does not wait for the message to be processed.

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Nibu thomas Software Developer

[David Crow]

You need to be using new and delete instead of malloc() and free(). Otherwise, the CString object's constructor and destructor do not get called. In addition, if you are going to use PostMessage(), you'll need to move delete to the server so that it can free the memory after it is done with it.

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