【发布时间】：2012-08-28 18:43:53
【问题描述】：
我正在尝试在 Visual Studio 2012（在 Win8 Release Preview 上）构建一个 C++/CLI 库，以在 C# 中使用函数 InitializeTouchInjection 和 InjectTouchInput。
我这样定义我的班级
// MultiTouchWrapper.h
namespace MultiTouchWrapper {
public ref class MultiTouchInjection
{
public:
static bool InitializeMultiTouch(int maxCount);
static bool InjectMultiTouch(int count, float *x, float *y, int *id);
};
}
并实现功能
//MultiTouchWrapper.cpp
#include "stdafx.h"
#include "MultiTouchWrapper.h"
namespace MultiTouchWrapper{
bool MultiTouchInjection::InitializeMultiTouch(int maxCount){
if(InitializeTouchInjection(maxCount, TOUCH_FEEDBACK_DEFAULT)) return true;
return false;
}
bool MultiTouchInjection::InjectMultiTouch(int count, float *x, float *y, int *id){
POINTER_TOUCH_INFO *contacts = new POINTER_TOUCH_INFO[count];
for(int i=0; i<count; i++){
contacts[i].pointerInfo.pointerType = PT_TOUCH;
contacts[i].pointerInfo.pointerId = id[0];
contacts[i].pointerInfo.ptPixelLocation.y = (LONG)y[0];
contacts[i].pointerInfo.ptPixelLocation.x = (LONG)x[0];
contacts[i].touchFlags = TOUCH_FLAG_NONE;
contacts[i].touchMask = TOUCH_MASK_NONE;
}
if(InjectTouchInput(count, contacts)) return true; //defined like this to avoid a warning about BOOL vs bool.
return false;
}
在 stdafx.h 中，我包含 <windows.h>，它给出了 InitializeTouchInjection 和 InjectTouchInput 到 <WinUser.h> 的定义。
我遇到的问题是，当我尝试构建这个库时，两个函数都出现错误 LNK2028 和 LNK2019：
Error 1 error LNK2028: unresolved token (0A00003B) "extern "C" int __stdcall InjectTouchInput(unsigned int,struct tagPOINTER_TOUCH_INFO const *)" (?InjectTouchInput@@$$J18YGHIPBUtagPOINTER_TOUCH_INFO@@@Z) referenced in function "public: static bool __clrcall MultiTouchWrapper::MultiTouchInjection::InjectMultiTouch(int,float *,float *,int *)" (?InjectMultiTouch@MultiTouchInjection@MultiTouchWrapper@@$$FSM_NHPAM0PAH@Z) C:\Users\mediascape\documents\visual studio 2012\Projects\MultiTouchWrapper\MultiTouchWrapper\MultiTouchWrapper.obj MultiTouchWrapper
Error 2 error LNK2028: unresolved token (0A000063) "extern "C" int __stdcall InitializeTouchInjection(unsigned int,unsigned long)" (?InitializeTouchInjection@@$$J18YGHIK@Z) referenced in function "public: static bool __clrcall MultiTouchWrapper::MultiTouchInjection::InitializeMultiTouch(int)" (?InitializeMultiTouch@MultiTouchInjection@MultiTouchWrapper@@$$FSM_NH@Z) C:\Users\mediascape\documents\visual studio 2012\Projects\MultiTouchWrapper\MultiTouchWrapper\MultiTouchWrapper.obj MultiTouchWrapper
Error 3 error LNK2019: unresolved external symbol "extern "C" int __stdcall InitializeTouchInjection(unsigned int,unsigned long)" (?InitializeTouchInjection@@$$J18YGHIK@Z) referenced in function "public: static bool __clrcall MultiTouchWrapper::MultiTouchInjection::InitializeMultiTouch(int)" (?InitializeMultiTouch@MultiTouchInjection@MultiTouchWrapper@@$$FSM_NH@Z) C:\Users\mediascape\documents\visual studio 2012\Projects\MultiTouchWrapper\MultiTouchWrapper\MultiTouchWrapper.obj MultiTouchWrapper
Error 4 error LNK2019: unresolved external symbol "extern "C" int __stdcall InjectTouchInput(unsigned int,struct tagPOINTER_TOUCH_INFO const *)" (?InjectTouchInput@@$$J18YGHIPBUtagPOINTER_TOUCH_INFO@@@Z) referenced in function "public: static bool __clrcall MultiTouchWrapper::MultiTouchInjection::InjectMultiTouch(int,float *,float *,int *)" (?InjectMultiTouch@MultiTouchInjection@MultiTouchWrapper@@$$FSM_NHPAM0PAH@Z) C:\Users\mediascape\documents\visual studio 2012\Projects\MultiTouchWrapper\MultiTouchWrapper\MultiTouchWrapper.obj MultiTouchWrapper
我不知道该怎么办。我尝试在配置属性 >> C/C++ >> 命令行菜单中包含 /LD。我尝试在高级菜单中将调用约定更改为__cdecl，但它总是恢复为__stdcall。
关于如何解决这些链接器错误的任何帮助？
【问题讨论】：
-
我相信，当您解决自己的问题时，惯例是将其作为答案输入并接受。
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不会让我马上接受，但我想我现在就试试。