C++ 常用WinDef 宏函数LOWORD和HIWORD

windows

 做一个WORD 和LONG

  

   

    

     

    
    

     

      #define MAKEWORD(a, b) ((WORD)(((BYTE)((DWORD_PTR)(a) & 0xff)) | ((WORD)((BYTE)((DWORD_PTR)(b) & 0xff))) << 8))
     
    
   

    

     

    
    

     

      #define MAKELONG(a, b) ((LONG)(((WORD)((DWORD_PTR)(a) & 0xffff)) | ((DWORD)((WORD)((DWORD_PTR)(b) & 0xffff))) << 16))
     
    
  
 

取WORD高字节和低字节

  

   

    

     

    
    

     

      #define LOWORD(l) ((WORD)((DWORD_PTR)(l) & 0xffff))
     
    
   

    

     

    
    

     

      #define HIWORD(l) ((WORD)((DWORD_PTR)(l) >> 16))
     
    
  
 

取BYTE高字节和低字节

  

   

    

     

    
    

     

      #define LOBYTE(w) ((BYTE)((DWORD_PTR)(w) & 0xff))
     
    
   

    

     

    
    

     

      #define HIBYTE(w) ((BYTE)((DWORD_PTR)(w) >> 8))
     
    
  
 

取最大值

  

   

    

     

    
    

     

      #ifndef max
     
    
   

    

     

    
    

     

      #define max(a,b) (((a) > (b)) ? (a) : (b))
     
    
   

    

     

    
    

     

      #endif
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      #ifndef min
     
    
   

    

     

    
    

     

      #define min(a,b) (((a) < (b)) ? (a) : (b))
     
    
   

    

     

    
    

     

      #endif
     
    
  
 

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原文链接：yujiang.blog.csdn.net/article/details/54343557