how to export dll with gui?

hi guys, im current having problem in exporting dll, e.i, i want to export my dll with gui and its class functions. currently i can export a dll like this:

Quote:

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#ifdef Q_WS_WIN
#define MY_DLL __declspec(dllexport)
#else
#define MY_DLL
#endif

extern "C" MY_DLL int sum(int a, int b)
{
return (a + b);
}

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now my question is, how can i export dll with gui as well as its class functions? many thnks

Quote:

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Originally Posted by cutie.monkey

now my question is, how can i export dll with gui as well as its class functions? many thnks

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You can look into Qt-Plugins for this purpose.
http://doc.trolltech.com/4.5/plugins-howto.html#the-lower-level-api-extending-qt-applications

i think exporting plugins is different from exporting dll with class functions. anyway thnks for your reply.. any help would be very much appreciated..

Is the code project article series by Mahmoud Komeily any good for you?

http://www.codeproject.com/KB/DLL/Dllfun.aspx

Admittingly it is aimed at MSVC, but it still might be helpful.

But, what problem ???
for example:

Code:

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....
typedef string (CALLBACK* EXECSQL)(string, string, int);
typedef int      (CALLBACK* MSGBOX) (string, int);
 
class SCRIPTENGINE_EXPORT ScriptEngine
{
public:
 
	 ScriptEngine();
	 ~ScriptEngine();
 
	bool	LoadScripts(string);
	void 	Clear();
	int     CallFunction(string cFunction, ScriptVal sVal, string& cOut);
	void    GetLastError(string &cError);
 
	void	SetPtrExecSql(EXECSQL pfnExecSql);
	void	SetPtrMsgBox (MSGBOX pfnMsgBox);
 
private:
 
	string		m_Scripts;
	string		m_Error;
 
};

---

scriptengine_global.h

Code:

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#ifndef SCRIPTENGINE_GLOBAL_H
#define SCRIPTENGINE_GLOBAL_H
 
#include <QtGlobal>
 
#ifdef SCRIPTENGINE_LIB
	#define SCRIPTENGINE_EXPORT Q_DECL_EXPORT
#else
	#define SCRIPTENGINE_EXPORT Q_DECL_IMPORT
#endif
#endif // SCRIPTENGINE_GLOBAL_H

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Quote:

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Originally Posted by Fastman

But, what problem ???

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currently i can export and call dll but without gui. now, what im trying to do is to add ui in my dll then call it from my application.