CODEWITHSUNDEEP
visual-studio-2010bitmapc++-clidestructor
NDGO
NDGO

Reputation: 51

Finding working destructor for gcroot<Bitmap^> class in visual studio

Sorry for my english. I want to free memory that was used by gcroot objejct. Here is a simple example that returns me an error. On MSDN I found that there is a Dispose() method for Bitmap object. When I'm trying to use this method for gcroot object MS VC 2010 returns me this message. How can I free this memory?

picture_box_main_handler.cpp(194): error C2039: Dispose: is not a member of "gcroot"

gcroot<Bitmap^>  new_image = gcnew Bitmap(500,500);
new_image.Dispose();

Upvotes: 1

Views: 475

Answers (1)

Matt Smith
Matt Smith

Reputation: 17474

You aren't trying to call the method on the 'gcroot' itself (so you don't want the . syntax).

However, Dispose for IDisposable is special in C++/cli. You use the delete keyword for that:

So you can just call:

delete new_image;

and that will call Dispose on the underlying Bitmap ^.

You may want to use auto_handle to take care of disposal automatically. See this question:

C++/CLI Resource Management Confusion

Upvotes: 2

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