base/applications/clipbrd/cliputils.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Clipboard Viewer
   4  * FILE:            base/applications/clipbrd/cliputils.c
   5  * PURPOSE:         Clipboard helper functions.
   6  * PROGRAMMERS:     Ricardo Hanke
   7  */
   8
   9 #include "precomp.h"
  10
  11 static int
  12 GetPredefinedClipboardFormatName(HINSTANCE hInstance,
  13                                  UINT uFormat,
  14                                  BOOL Unicode,
  15                                  PVOID lpszFormat,
  16                                  UINT cch)
  17 {
  18     static
  19     struct FORMAT_NAME
  20     {
  21         UINT uFormat;
  22         UINT uResID;
  23     } uFormatList[] = {
  24     /* Table sorted in increasing order of CF_xxx values, please keep it this way! */
  25         {CF_TEXT        , STRING_CF_TEXT        },          // 1
  26         {CF_BITMAP      , STRING_CF_BITMAP      },          // 2
  27         {CF_METAFILEPICT, STRING_CF_METAFILEPICT},          // 3
  28         {CF_SYLK        , STRING_CF_SYLK        },          // 4
  29         {CF_DIF         , STRING_CF_DIF         },          // 5
  30         {CF_TIFF        , 0/*STRING_CF_TIFF*/        },          // 6
  31         {CF_OEMTEXT     , STRING_CF_OEMTEXT     },          // 7
  32         {CF_DIB         , STRING_CF_DIB         },          // 8
  33         {CF_PALETTE     , STRING_CF_PALETTE     },          // 9
  34         {CF_PENDATA     , 0/*STRING_CF_PENDATA*/     },          // 10
  35         {CF_RIFF        , 0/*STRING_CF_RIFF*/        },          // 11
  36         {CF_WAVE        , 0/*STRING_CF_WAVE*/        },          // 12
  37         {CF_UNICODETEXT , STRING_CF_UNICODETEXT },          // 13
  38         {CF_ENHMETAFILE , STRING_CF_ENHMETAFILE },          // 14
  39 #if(WINVER >= 0x0400)
  40         {CF_HDROP       , STRING_CF_HDROP       },          // 15
  41         {CF_LOCALE      , STRING_CF_LOCALE      },          // 16
  42 #endif
  43 #if(WINVER >= 0x0500)
  44         {CF_DIBV5       , STRING_CF_DIBV5       },          // 17
  45 #endif
  46     };
  47
  48     switch (uFormat)
  49     {
  50         case CF_TEXT: case CF_BITMAP: case CF_METAFILEPICT:
  51         case CF_SYLK: case CF_DIF: // case CF_TIFF:
  52         case CF_OEMTEXT: case CF_DIB: case CF_PALETTE:
  53         // case CF_PENDATA: // case CF_RIFF: // case CF_WAVE:
  54         case CF_UNICODETEXT: case CF_ENHMETAFILE:
  55 #if(WINVER >= 0x0400)
  56         case CF_HDROP: case CF_LOCALE:
  57 #endif
  58 #if(WINVER >= 0x0500)
  59         case CF_DIBV5:
  60 #endif
  61         {
  62             if (Unicode)
  63                 return LoadStringW(hInstance, uFormatList[uFormat-1].uResID, (LPWSTR)lpszFormat, cch);
  64             else
  65                 return LoadStringA(hInstance, uFormatList[uFormat-1].uResID, (LPSTR)lpszFormat, cch);
  66         }
  67
  68         default:
  69         {
  70             return 0;
  71         }
  72     }
  73 }
  74
  75 void
  76 RetrieveClipboardFormatName(HINSTANCE hInstance,
  77                             UINT uFormat,
  78                             BOOL Unicode,
  79                             PVOID lpszFormat,
  80                             UINT cch)
  81 {
  82     if (!GetPredefinedClipboardFormatName(hInstance, uFormat, Unicode, lpszFormat, cch))
  83     {
  84         if (Unicode)
  85         {
  86             if (!GetClipboardFormatNameW(uFormat, (LPWSTR)lpszFormat, cch))
  87                 LoadStringW(hInstance, STRING_CF_UNKNOWN, (LPWSTR)lpszFormat, cch);
  88         }
  89         else
  90         {
  91             if (!GetClipboardFormatNameA(uFormat, (LPSTR)lpszFormat, cch))
  92                 LoadStringA(hInstance, STRING_CF_UNKNOWN, (LPSTR)lpszFormat, cch);
  93         }
  94     }
  95 }
  96
  97 void DeleteClipboardContent(void)
  98 {
  99     if (!OpenClipboard(Globals.hMainWnd))
 100     {
 101         ShowLastWin32Error(Globals.hMainWnd);
 102         return;
 103     }
 104
 105     if (!EmptyClipboard())
 106     {
 107         ShowLastWin32Error(Globals.hMainWnd);
 108     }
 109
 110     CloseClipboard();
 111 }
 112
 113 UINT GetAutomaticClipboardFormat(void)
 114 {
 115     static UINT uFormatList[] = {
 116         CF_UNICODETEXT,
 117         CF_ENHMETAFILE,
 118         CF_METAFILEPICT,
 119         CF_DIBV5,
 120         CF_DIB,
 121         CF_BITMAP
 122     };
 123
 124     return GetPriorityClipboardFormat(uFormatList, ARRAYSIZE(uFormatList));
 125 }
 126
 127 BOOL IsClipboardFormatSupported(UINT uFormat)
 128 {
 129     switch (uFormat)
 130     {
 131         case CF_UNICODETEXT:
 132         case CF_BITMAP:
 133         case CF_ENHMETAFILE:
 134         case CF_METAFILEPICT:
 135         case CF_DIB:
 136         case CF_DIBV5:
 137         {
 138             return TRUE;
 139         }
 140
 141         default:
 142         {
 143             return FALSE;
 144         }
 145     }
 146 }