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Extending an existing widget... [message #50673]

Mon, 03 December 2018 04:33

ptkacz
Messages: 89
Registered: March 2017

Member

Hi All,

I'm attempting to extend EditValue, based on how a class like EditString is defined, found listed within the EditCtrl.h header file. The definition looks like:

class ExtendedEdit : public EditValue<WString, ConvertString> {
public:
	typedef ExtendedEdit CLASSNAME;
        ...

Unfortunately, the error error: expected template-name before '<' token results in being generated. If EditCtrl.h is included, a whole slew of compilation errors result. Since EditCtrl.h's parent file is, CtrlLib.h that's included instead.

How is it that

class EditString : public EditValue<WString, ConvertString> {...}

is defined, but does not receive the error, error: expected template-name before '<' token?

Peter

PS: It's a shame that there are header files that include some useful functions or methods, and when included, bomb because they are dependant on other libraries being included prior. From a software design perspective, shouldn't each library file stand on it's own with the expected includes?

[Updated on: Mon, 03 December 2018 04:37]

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