gHINSTANCE is undefined ERROR when trying to have a custom icon for a toolbar button

Question

Hello everyone

I am trying to add a button to a toolbar using plugins and I want it to have a custom icon.

I found in the SDK the following code snippet:

//Declare an AVToolButton object

AVToolButton MyButton = NULL;

//Create an AVIcon object

AVIcon myIcon = (AVCursor)LoadBitmap(gHINSTANCE, MAKEINTRESOURCE(IDB_BITMAP1));

//Create a new button

MyButton = AVToolButtonNew(ASAtomFromString("MyExtn:MyButton"), myIcon, false, false);

When I try using this in visual studio, it shows me the error "identifier gHINSTANCE is undefined"

I have included the "PIMain.c" file as well , and as the SDK says that gHINSTANCE is an instance of object HINSTANCE, I can also see this object declaration in PIMain.c file.

Can anyone suggest what could be going wrong here?

Thanks

Test Screen Name · Accepted Answer

This is defined in one of the header files. Perhaps you did not keep all the original #include lines. Or maybe you need to add another one - search the SDK and API headers to find the definition and any comments.

Test Screen Name · Answer

You haven't included the needed header files. Don't try to make a plug-in from scratch, I have been working with plug-ins for more than 20 years and would never try this. Use the sample starter plug-in, understand what it does, then add your code.

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