lib/cpBaseQtApplication/MainHelper.h

   1 #ifndef __cpBaseQtApplication__MainHelper__h__
   2 #define __cpBaseQtApplication__MainHelper__h__
   3
   4 #include <cstdlib>
   5 #include <QApplication>
   6
   7 // -------------------------------------------------------------------------
   8 #define cpBaseQtApplication_Main( _window_class_ )              \
   9   int main( int argc, char* argv[] )                            \
  10   {                                                             \
  11     QApplication a( argc, argv );                               \
  12     _window_class_ w( argc, argv, &a );                         \
  13     w.show( );                                                  \
  14     return( a.exec( ) );                                        \
  15   }
  16
  17 // -------------------------------------------------------------------------
  18 #include <cpPlugins/Config.h>
  19
  20 #ifdef cpPlugins_OS_Windows
  21
  22 #  include <memory>
  23 #  include <vector>
  24 #  include <windows.h>
  25 #  include <shellapi.h>
  26
  27 // -------------------------------------------------------------------------
  28 namespace cpBaseQtApplication
  29 {
  30   /**
  31    */
  32   class Win32CommandLineConverter
  33   {
  34   private:
  35     std::unique_ptr< char*[ ] > argv_;
  36     std::vector< std::unique_ptr< char[ ] > > storage_;
  37
  38   public:
  39     Win32CommandLineConverter( )
  40       {
  41         LPWSTR cmd_line = GetCommandLineW( );
  42         int argc;
  43         LPWSTR* w_argv = CommandLineToArgvW( cmd_line, &argc );
  44         argv_ = std::unique_ptr< char*[ ] >( new char*[ argc ] );
  45         storage_.reserve( argc );
  46         for( int i = 0; i < argc; ++i )
  47         {
  48           storage_.push_back( ConvertWArg( w_argv[ i ] ) );
  49           argv_[ i ] = storage_.back( ).get( );
  50
  51         } // rof
  52         LocalFree( w_argv );
  53       }
  54     int argc( ) const
  55       {
  56         return( static_cast< int >(storage_.size( ) ) );
  57       }
  58     char** argv( ) const
  59       {
  60         return( argv_.get( ) );
  61       }
  62     static std::unique_ptr< char[ ] > ConvertWArg( LPWSTR w_arg )
  63       {
  64         int size = WideCharToMultiByte(
  65           CP_UTF8, 0, w_arg, -1, nullptr, 0, nullptr, nullptr
  66           );
  67         std::unique_ptr< char[ ] > ret( new char[ size ] );
  68         WideCharToMultiByte(
  69           CP_UTF8, 0, w_arg, -1, ret.get( ), size, nullptr, nullptr
  70           );
  71         return( ret );
  72       }
  73   };
  74
  75 } // ecapseman
  76
  77 // -------------------------------------------------------------------------
  78 #  define cpBaseQtApplication_MainComplement                            \
  79   int CALLBACK WinMain( HINSTANCE i, HINSTANCE p, LPSTR c, int s )      \
  80   {                                                                     \
  81     cpBaseQtApplication::Win32CommandLineConverter cmd_line;            \
  82     return( main( cmd_line.argc( ), cmd_line.argv( ) ) );               \
  83   }
  84 #else  // cpPlugins_OS_Windows
  85 #  define cpBaseQtApplication_MainComplement
  86 #endif // cpPlugins_OS_Windows
  87
  88 #endif // __cpBaseQtApplication__MainHelper__h__
  89
  90 // eof - $RCSfile$