c++ - visual studio 窗口从其他类调用函数

Question

我正在开发一个小型的 visual stdio 2010 c++ 项目。我创建了一个基于 Windows 的小项目。 GUI 界面有一些按钮。然后我创建了一个带有一些小功能的 xxx.h 和 xxx.cpp 文件。现在我想在有人按下按钮时从 xxx 调用一个函数。我收到以下错误请帮助我....

1>EagleTool.obj : error LNK2028: unresolved token (0A0000CF) "public: static void __clrcall EagleTool::extractCorrectPathofEagle(void)" (?extractCorrectPathofEagle@EagleTool@@$$FSMXXZ) referenced in function "private: void __clrcall EagleGUI::Form1::button3_Click(class System::Object ^,class System::EventArgs ^)" (?button3_Click@Form1@EagleGUI@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)
1>EagleGUI.obj : error LNK2028: unresolved token (0A00000B) "public: static void __clrcall EagleTool::extractCorrectPathofEagle(void)" (?extractCorrectPathofEagle@EagleTool@@$$FSMXXZ) referenced in function "private: void __clrcall EagleGUI::Form1::button3_Click(class System::Object ^,class System::EventArgs ^)" (?button3_Click@Form1@EagleGUI@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)
1>EagleGUI.obj : error LNK2019: unresolved external symbol "public: static void __clrcall EagleTool::extractCorrectPathofEagle(void)" (?extractCorrectPathofEagle@EagleTool@@$$FSMXXZ) referenced in function "private: void __clrcall EagleGUI::Form1::button3_Click(class System::Object ^,class System::EventArgs ^)" (?button3_Click@Form1@EagleGUI@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)
1>EagleTool.obj : error LNK2001: unresolved external symbol "public: static void __clrcall EagleTool::extractCorrectPathofEagle(void)" (?extractCorrectPathofEagle@EagleTool@@$$FSMXXZ)

EagleTool.h

#ifndef _EagleTool_H_
#define _EagleTool_H_
class EagleTool {

  public:
    void static extractCorrectPathofEagle();

 };

#endif

EagleTool.cpp

#include "stdafx.h"

#include "EagleTool.h"
#include "Form1.h"

void static extractCorrectPathofEagle(){

}

Answer 1

您需要在定义中包含类名:

static void EagleTool::extractCorrectPathofEagle() {
    // ...
}

否则，您将定义一个完全不相关的函数，而该函数恰好具有相同的名称。