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DataExchange in MFC

DataExchange in MFC

DataExchange in MFC

Hi there
I've been having issues with this for a long time. I need two dialogs to communicate. I can get it to work so that if the child dialog is closed the parent gets updated.  Is there a way to do it so that it is simultaneous. it's supposed to be for an exposure controll - and if I have to close the window every time I adjust the dial it gets a bit didious.
   any ideas?
thank you for your time

RE: DataExchange in MFC

Each dialog box presumably is running a continuous loop.

Why can't you simply establish a semaphore that both can see and monitor each time it runs through the loop?


RE: DataExchange in MFC

why I don't do that ?   simply becasue I don't know how.  Any idea where I could look this up?

RE: DataExchange in MFC

Hi danielp0,

Do you have a copy of the book by Jeff Prosise, "Programming Windows with MFC"? It is one reference you might want to consult. You could probably figure out what you need to do with the information in this book. Here is a suggestion. In the child dialog class, do you have a handler to process messages generated by the dial control? The child dialog class dial control handler could execute a bit of code something like:

<update parent member variables>

assuming that the child dialog can manipulate the member variables of the parent dialog. Hope this helps.

Good Luck,
Greg Hansen
Expectation is the mother of disappointment

RE: DataExchange in MFC

Clipboard memory is shared by all resources. You can use that to share information by all dialogs and even different programs.

Sorry, I don't tell you "how" as I myself do not know it. See if you can find it in help files or MSDN.


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