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我想這個方法傳遞:我怎麼投類方法來複制代碼QScriptEngine :: FunctionSignature
QScriptValue ScriptProcessContext::construct(QScriptContext * ctx, QScriptEngine *)
{
return this->newInstance();
}
到QScriptEngine::newFunction
。我嘗試了以下選項:
如文檔and also this example code:
QScriptValue ctor = engine->newFunction(construct);
錯誤:
error C3867: 'ScriptProcessContext::construct': function call missing argument list; use '&ScriptProcessContext::construct' to create a pointer to member
部隊投:
QScriptValue ctor = engine->newFunction((QScriptEngine::FunctionSignature)construct);
錯誤:
error C2440: 'type cast' : cannot convert from 'overloaded-function' to 'QScriptEngine::FunctionSignature'
演員指針成員
QScriptValue ctor = engine->newFunction( (QScriptValue(ScriptProcessContext::*)(QScriptContext *, QScriptEngine *)) &ScriptProcessContext::construct );
錯誤:
error C2664: 'QScriptValue QScriptEngine::newFunction(QScriptEngine::FunctionSignature,int)' : cannot convert parameter 1 from 'QScriptValue (__cdecl ScriptProcessContext::*)(QScriptContext *,QScriptEngine *)' to 'QScriptEngine::FunctionSignature'
因此,如何正確地寫呢?
你有沒有嘗試做什麼原始的錯誤消息建議? – nwp
@nwp這就是你可以在最後一個例子中看到的 –
最後一個例子顯示了對成員函數指針的瘋狂C轉換。這完全不是這個錯誤消息的建議。 – nwp