The callback function has the following format. You can specify any name for this function.
static long _stdcall CallBackProc(short Id, short Message, WPARAM wParam, LPARAM lParam, void *Param);
You can also add functions by using the .NET integrated environment.
In [Class View], right-click on the class to which you want to add an event message routine.
Then select [Add]-[Add Function]. The [Add Member Function Wizard] dialog is displayed.
Create the function according to the following procedure.
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[Access] |
public |
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[Return type] |
long _stdcall |
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[Function name] |
CallBackProc |
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[Parameter type] |
short |
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[Function name] |
Id |
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[Add] |
Click |
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[Parameter type] |
short |
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[Function name] |
Message |
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[Add] |
Click |
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[Parameter type] |
WPARAM |
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[Function name] |
wParam |
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[Add] |
Click |
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[Parameter type] |
LPARAM |
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[Function name] |
lParam |
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[Add] |
Click |
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[Parameter type] |
void * |
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[Function name] |
Param |
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[Add] |
Click |
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[Static] |
Check |
Confirm that the declaration of function is as follows, and click the [Finish] button.
static long _stdcall CallBackProc(short Id, short Message, WPARAM wParam, LPARAM lParam, void *Param);
The wizard declares the function prototype and creates the skeleton.