reactos/base/applications/clipbrd/winutils.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Clipboard Viewer
   4  * FILE:            base/applications/clipbrd/winutils.c
   5  * PURPOSE:         Miscellaneous helper functions.
   6  * PROGRAMMERS:     Ricardo Hanke
   7  */
   8
   9 #include "precomp.h"
  10
  11 void ShowLastWin32Error(HWND hwndParent)
  12 {
  13     DWORD dwError;
  14     LPWSTR lpMsgBuf = NULL;
  15
  16     dwError = GetLastError();
  17     if (dwError == NO_ERROR)
  18         return;
  19
  20     FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
  21                    NULL, dwError, 0, (LPWSTR)&lpMsgBuf, 0,  NULL);
  22     MessageBoxW(hwndParent, lpMsgBuf, NULL, MB_OK | MB_ICONERROR);
  23     LocalFree(lpMsgBuf);
  24 }
  25
  26 void BringWindowToFront(HWND hWnd)
  27 {
  28     if (IsIconic(hWnd))
  29     {
  30         ShowWindow(hWnd, SW_RESTORE);
  31         SetForegroundWindow(hWnd);
  32     }
  33     else
  34     {
  35         SetForegroundWindow(hWnd);
  36     }
  37 }
  38
  39 int DrawTextFromResource(HINSTANCE hInstance, UINT uID, HDC hDC, LPRECT lpRect, UINT uFormat)
  40 {
  41     LPWSTR lpBuffer;
  42     int nCount;
  43
  44     nCount = LoadStringW(hInstance, uID, (LPWSTR)&lpBuffer, 0);
  45     if (nCount)
  46     {
  47         return DrawTextW(hDC, lpBuffer, nCount, lpRect, uFormat);
  48     }
  49     else
  50     {
  51         return 0;
  52     }
  53 }
  54
  55 int MessageBoxRes(HWND hWnd, HINSTANCE hInstance, UINT uText, UINT uCaption, UINT uType)
  56 {
  57     MSGBOXPARAMSW mb;
  58
  59     ZeroMemory(&mb, sizeof(mb));
  60     mb.cbSize = sizeof(mb);
  61     mb.hwndOwner = hWnd;
  62     mb.hInstance = hInstance;
  63     mb.lpszText = MAKEINTRESOURCEW(uText);
  64     mb.lpszCaption = MAKEINTRESOURCEW(uCaption);
  65     mb.dwStyle = uType;
  66     mb.dwLanguageId = MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT);
  67
  68     return MessageBoxIndirectW(&mb);
  69 }
  70
  71 void DrawTextFromClipboard(HDC hDC, LPRECT lpRect, UINT uFormat)
  72 {
  73     HGLOBAL hGlobal;
  74     LPWSTR lpchText;
  75
  76     if (!OpenClipboard(NULL))
  77         return;
  78
  79     hGlobal = GetClipboardData(CF_UNICODETEXT);
  80     if (!hGlobal)
  81         return;
  82
  83     lpchText = GlobalLock(hGlobal);
  84     if (!lpchText)
  85         return;
  86
  87     DrawTextW(hDC, lpchText, -1, lpRect, uFormat);
  88     GlobalUnlock(hGlobal);
  89     CloseClipboard();
  90 }
  91
  92 void BitBltFromClipboard(HDC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, int nXSrc, int nYSrc, DWORD dwRop)
  93 {
  94     HDC hdcMem;
  95     HBITMAP hbm;
  96
  97     if (!OpenClipboard(NULL))
  98         return;
  99
 100     hdcMem = CreateCompatibleDC(hdcDest);
 101     if (hdcMem)
 102     {
 103         hbm = (HBITMAP)GetClipboardData(CF_BITMAP);
 104         SelectObject(hdcMem, hbm);
 105         BitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcMem, nXSrc, nYSrc, dwRop);
 106         DeleteDC(hdcMem);
 107     }
 108     CloseClipboard();
 109 }
 110
 111 void SetDIBitsToDeviceFromClipboard(UINT uFormat, HDC hdc, int XDest, int YDest, int XSrc, int YSrc, UINT uStartScan, UINT fuColorUse)
 112 {
 113     LPBITMAPINFOHEADER lpInfoHeader;
 114     LPBYTE lpBits;
 115     HGLOBAL hGlobal;
 116     INT iPalSize;
 117
 118     if (!OpenClipboard(NULL))
 119         return;
 120
 121     hGlobal = GetClipboardData(uFormat);
 122     if (!hGlobal)
 123         return;
 124
 125     lpInfoHeader = GlobalLock(hGlobal);
 126     if (!lpInfoHeader)
 127         return;
 128
 129     if (lpInfoHeader->biBitCount < 16)
 130     {
 131         iPalSize = (1 << lpInfoHeader->biBitCount) * 4;
 132     }
 133     else
 134     {
 135         iPalSize = 0;
 136     }
 137
 138     lpBits = (LPBYTE)lpInfoHeader + lpInfoHeader->biSize + iPalSize;
 139
 140     SetDIBitsToDevice(hdc, XDest, YDest, lpInfoHeader->biWidth, lpInfoHeader->biHeight, XSrc, YSrc, uStartScan, lpInfoHeader->biHeight, lpBits, (LPBITMAPINFO)lpInfoHeader, fuColorUse);
 141
 142     GlobalUnlock(hGlobal);
 143     CloseClipboard();
 144 }
 145
 146 void PlayMetaFileFromClipboard(HDC hdc, const RECT *lpRect)
 147 {
 148     LPMETAFILEPICT mp;
 149     HGLOBAL hGlobal;
 150
 151     if (!OpenClipboard(NULL))
 152         return;
 153
 154     hGlobal = GetClipboardData(CF_METAFILEPICT);
 155     if (!hGlobal)
 156         return;
 157
 158     mp = (LPMETAFILEPICT)GlobalLock(hGlobal);
 159     if (!mp)
 160         return;
 161
 162     SetMapMode(hdc, mp->mm);
 163     SetViewportExtEx(hdc, lpRect->right, lpRect->bottom, NULL);
 164     SetViewportOrgEx(hdc, lpRect->left, lpRect->top, NULL);
 165     PlayMetaFile(hdc, mp->hMF);
 166     GlobalUnlock(hGlobal);
 167     CloseClipboard();
 168 }
 169
 170 void PlayEnhMetaFileFromClipboard(HDC hdc, const RECT *lpRect)
 171 {
 172     HENHMETAFILE hEmf;
 173
 174     if (!OpenClipboard(NULL))
 175         return;
 176
 177     hEmf = GetClipboardData(CF_ENHMETAFILE);
 178     PlayEnhMetaFile(hdc, hEmf, lpRect);
 179     CloseClipboard();
 180 }