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POC++/CLI application for InjectTouchInput API. LNK2028 and LNK2019 errors
 

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  1. POC++/CLI application for InjectTouchInput API. LNK2028 and LNK2019 errors
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    <p>I'm trying to build a C++/CLI library in Visual Studio 2012 (on Win8 Release Preview) to use the functions <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/hh802880%28v=vs.85%29.aspx" rel="nofollow">InitializeTouchInjection</a> and <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/hh802881%28v=vs.85%29.aspx" rel="nofollow">InjectTouchInput</a> in C#.</p> <p>I define my class like so</p> <pre><code>// 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); }; } </code></pre> <p>and implement the functions</p> <pre><code>//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&lt;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; } </code></pre> <p>In stdafx.h I include <code>&lt;windows.h&gt;</code>, which gives the definition of <code>InitializeTouchInjection</code> and <code>InjectTouchInput</code> through <code>&lt;WinUser.h&gt;</code>.</p> <p>The problem I'm running across is that when I try to build this library, I get the errors LNK2028 and LNK2019 for both functions:</p> <pre><code>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 </code></pre> <p>I'm not sure what to do. I've tried including /LD in the Configuration Properties >> C/C++ >> Command Line menu. I've tried changing the calling convention to <code>__cdecl</code> in the Advanced menu, but it always reverts back to <code>__stdcall</code>.</p> <p>Any help on what to do to get around these linker errors?</p>
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    1. USScott M
    1. USScott M
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    1. COI believe the convention for when you solve your own problem is to enter it as an answer, and accept the answer.
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      1. USDavid Yaw
    2. COWouldn't let me accept it right away, but I guess I'll try it now.
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      1. USScott M
 

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