mfc dll <-> app communication

eXplodus

little question. is there a chance to get a pointer back to the application. and to use the functions of the application? or to get data from the application. or is the only way to send messages? how could i communication between the dll and the application. i could call a dll function. but how is it if a export a view and wanna call a function from the mainframe or from the document class? any ideas?

valikac

The DLL has a message queue. Handle the incoming message. Kuphryn

Neville Franks

Well you can pass a pointer from the app to the DLL and then it can use that. If the functions are in your CMainFrame class et.all. then you can use MFC functions in your DLL to get a ptr to these. Another alternative is "Calling an Exported Function in an EXE from Within a DLL" http://codeguru.earthweb.com/dll/ExportingFromExe.html[^] Neville Franks, Author of ED for Windows. www.getsoft.com Make money with our new Affilate program

Bartosz Bien

As you import functions from DLL to your application, and not the other direction, application-defined classes should not be called by the DLL. Use MFC extension DLL to export a view class for your app's framework. Regards, BB

eXplodus

thats ok, and how did i got a pointer back to my app? and (myApp*) AfxGetApp() ??

Bartosz Bien

1. Thou shalt not include CMyApp definition in a DLL. 2. You may use AfxGetApp() to send messages to your app, but I personally don't like such solutions - this is not what DLLs are for. X| Regards, BB

eXplodus

i know it. but i need to get pointers back to my app. and messages are a bad way. but the only way that i know