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POLinker errors with private members of class in header file
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  1. POLinker errors with private members of class in header file
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    copied!<p>I'm trying to build a project in Visual Studio 2008. I'm getting a bunch of linker errors that are really bothering me. My application is a Win32 console application using only native ANSI C++.</p> <p>They are all linker errors of the same pattern. Linker errors are related to every single private static data member of classes I have defined in my own header files.</p> <p>I'm guessing this is probably a simple fact of c++ I'm not already aware of?</p> <p>Example: I refer to the members of SingleDelay within function definitions of SingleDelay's member classes in a file Delays.cpp. ie:</p> <pre><code>SingleDelay::tick(void *output, void *input, int nbufferFrames)&lt;br&gt;{ //.. code here&lt;br&gt; x = dry * castInput + wet * castInput;&lt;br&gt; } </code></pre> <p>Error 38 error LNK2001: unresolved external symbol "private: static double SingleDelay::dry" (?dry@SingleDelay@@0NA) Delays.obj testall</p> <p>Definition of SingleDelay in Delays.h:</p> <pre><code>class SingleDelay{ private: static double dry; //% of dry signal&lt;br&gt; static double wet; //% of wet signal&lt;br&gt; static unsigned int delay; //Delay in milliseconds&lt;br&gt; static int delayCell; //Index in the delayBuffer of the delay to add&lt;br&gt; static double *delayBuffer; //Delay buffer is 1 second long at sample rate SAMPLE_RATE&lt;br&gt; static unsigned int bufferCell; //Pointer to the current delay buffer cell&lt;br&gt; public: //Tick function static void tick(void *output, void *input,int nBufferFrames); //Set and Get functions static void setSingleDelay(double tDry, double tWet, unsigned int tDelay); static void setSingleDelay(void); static void setDry(double tDry); static void setWet(double tWet); static void setDelay(unsigned int tDelay); static double getDry(){ return dry;} static double getWet(){ return wet;} static unsigned int getDelay(){ return delay;} static void initializeDelayBuffer(){ destroyDelayBuffer(); delayBuffer = new double[bufferLength]; } static void destroyDelayBuffer(){ delete[ ] delayBuffer; } }; </code></pre>
 

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