wince画图的问题！

dltskp

wince画图的问题！ [复制链接]

各位高手，有一个程序在XP上可以保存为BMP格式的文件，但是现在我想把他移植到WINCE，但是WINCE不支持GetDIBits，哪位能帮我用CreateDIBSection代替它：改一下呀？函数如下：不胜感谢！
void CHDrawView::OnBmpSave()
{
        // TODO: Add your command handler code here
        CFileDialog dlg(FALSE, "bmp","hjz.bmp");
        if(dlg.DoModal() != IDOK){
                return ;
        }
        CString filePath = dlg.GetPathName();
        // TODO: Add your command handler code here
        CClientDC client(this);//用于本控件的，楼主可以不用此句
        CDC cdc;
        CBitmap bitmap;
        RECT rect;CRect r;
        GetClientRect(&rect);
        int cx = rect.right - rect.left;
        int cy = rect.bottom - rect.top;
        bitmap.CreateCompatibleBitmap(&client, cx, cy);
        cdc.CreateCompatibleDC(NULL);
        CBitmap * oldbitmap = (CBitmap* ) cdc.SelectObject(&bitmap);//创建位图兼容DC，然后在这个DC上画图
        cdc.FillRect(&rect, CBrush::FromHandle((HBRUSH)GetStockObject(WHITE_BRUSH)));
        for(int i = 0; i < GetDocument()->m_strokeList.GetSize(); i ++){
                GetDocument()->m_strokeList.GetAt(i)->DrawStroke(&cdc);
        }
        cdc.SelectObject(oldbitmap);
        ::OpenClipboard(this->m_hWnd);
        ::EmptyClipboard();
        ::SetClipboardData(CF_BITMAP, bitmap);
        ::CloseClipboard();
       
       
        HBITMAP hBitmap = (HBITMAP)bitmap;
        HDC hDC;
        int iBits;
        WORD wBitCount;
        DWORD dwPaletteSize=0, dwBmBitsSize=0, dwDIBSize=0, dwWritten=0;
        BITMAP Bitmap;
        BITMAPFILEHEADER bmfHdr;
        BITMAPINFOHEADER bi;
        LPBITMAPINFOHEADER lpbi;
        HANDLE fh, hDib, hPal,hOldPal=NULL;
       
        hDC = CreateDC("DISPLAY", NULL, NULL, NULL);
        iBits = GetDeviceCaps(hDC, BITSPIXEL) * GetDeviceCaps(hDC, PLANES);
        DeleteDC(hDC);
        if (iBits <= 1)  wBitCount = 1;
        else if (iBits <= 4)  wBitCount = 4;
        else if (iBits <= 8)  wBitCount = 8;
        else      wBitCount = 24;
       
        GetObject(hBitmap, sizeof(Bitmap), (LPSTR)&Bitmap);
        bi.biSize   = sizeof(BITMAPINFOHEADER);
        bi.biWidth   = Bitmap.bmWidth;
        bi.biHeight   = Bitmap.bmHeight;
        bi.biPlanes   = 1;
        bi.biBitCount  = wBitCount;
        bi.biCompression = BI_RGB;
        bi.biSizeImage  = 0;
        bi.biXPelsPerMeter = 0;
        bi.biYPelsPerMeter = 0;
        bi.biClrImportant = 0;
        bi.biClrUsed  = 0;
       
        dwBmBitsSize = ((Bitmap.bmWidth * wBitCount + 31) / 32) * 4 * Bitmap.bmHeight;
       
        hDib = GlobalAlloc(GHND,dwBmBitsSize + dwPaletteSize + sizeof(BITMAPINFOHEADER));
        lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);
        *lpbi = bi;
       
        hPal = GetStockObject(DEFAULT_PALETTE);
        if (hPal)
        {
                hDC = ::GetDC(NULL);
                hOldPal = ::SelectPalette(hDC, (HPALETTE)hPal, FALSE);
                RealizePalette(hDC);
        }


        //得到这个位图的数据
        GetDIBits(hDC, hBitmap, 0, (UINT) Bitmap.bmHeight, (LPSTR)lpbi + sizeof(BITMAPINFOHEADER)
                +dwPaletteSize, (BITMAPINFO *)lpbi, DIB_RGB_COLORS);
       
        if (hOldPal)
        {
                ::SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
                RealizePalette(hDC);
                ::ReleaseDC(NULL, hDC);
        }
       
        fh = CreateFile(filePath, GENERIC_WRITE,0, NULL, CREATE_ALWAYS,
                FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);
       
        if (fh == INVALID_HANDLE_VALUE)  
                return                 ;
       
        bmfHdr.bfType = 0x4D42; // "BM"
        dwDIBSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + dwPaletteSize + dwBmBitsSize;
        bmfHdr.bfSize = dwDIBSize;
        bmfHdr.bfReserved1 = 0;
        bmfHdr.bfReserved2 = 0;
        bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER) + dwPaletteSize;
       
        WriteFile(fh, (LPSTR)&bmfHdr, sizeof(BITMAPFILEHEADER), &dwWritten, NULL);
        WriteFile(fh, (LPSTR)lpbi, dwDIBSize, &dwWritten, NULL);
       
        GlobalUnlock(hDib);
        GlobalFree(hDib);
        CloseHandle(fh);
}

poonhm

DIY!!

qianlongwuyong

呵呵，支持一下.

这个DEMO中有一个Save，保存为BMP位图格式的。

需要用到替换函数的，WINCE有很多东西不支持的。

[url=http://www.evccode.com/ch/ProductView.asp?ID=23][/url]

shhuikun

http://topic.eeworld.net/u/20090626/16/8a10bc62-5aad-4bd0-9fd5-0a543a8991b0.html
这有些有用的代码

hamsun2008

1. 
   
2. void CHDrawView::OnBmpSave()
   
3. {
   
4. // TODO: Add your command handler code here
   
5. CFileDialog dlg(FALSE, "bmp","hjz.bmp");
   
6. if(dlg.DoModal() != IDOK){
   
7. return ;
   
8. }
   
9. CString filePath = dlg.GetPathName();
   
10. // TODO: Add your command handler code here
    
11. CClientDC client(this);//用于本控件的，楼主可以不用此句
    
12. CDC cdc;
    
13. CBitmap bitmap;
    
14. RECT rect;CRect r;
    
15. GetClientRect(&rect);
    
16. int cx = rect.right - rect.left;
    
17. int cy = rect.bottom - rect.top;
    
18. bitmap.CreateCompatibleBitmap(&client, cx, cy);
    
19. cdc.CreateCompatibleDC(NULL);
    
20. CBitmap * oldbitmap = (CBitmap* ) cdc.SelectObject(&bitmap);//创建位图兼容DC，然后在这个DC上画图
    
21. cdc.FillRect(&rect, CBrush::FromHandle((HBRUSH)GetStockObject(WHITE_BRUSH)));
    
22. for(int i = 0; i < GetDocument()->m_strokeList.GetSize(); i ++){
    
23. GetDocument()->m_strokeList.GetAt(i)->DrawStroke(&cdc);
    
24. }
    
25. cdc.SelectObject(oldbitmap);
    
26. ::OpenClipboard(this->m_hWnd);
    
27. ::EmptyClipboard();
    
28. ::SetClipboardData(CF_BITMAP, bitmap);
    
29. ::CloseClipboard();
    
30. 
    
31. 
    
32. HBITMAP hBitmap = (HBITMAP)bitmap;
    
33. HDC hDC;
    
34. int iBits;
    
35. WORD wBitCount;
    
36. DWORD dwPaletteSize=0, dwBmBitsSize=0, dwDIBSize=0, dwWritten=0;
    
37. BITMAP Bitmap;
    
38. BITMAPFILEHEADER bmfHdr;
    
39. BITMAPINFOHEADER bi;
    
40. LPBITMAPINFOHEADER lpbi;
    
41. HANDLE fh, hDib, hPal,hOldPal=NULL;
    
42. 
    
43. hDC = CreateDC("DISPLAY", NULL, NULL, NULL);
    
44. iBits = GetDeviceCaps(hDC, BITSPIXEL) * GetDeviceCaps(hDC, PLANES);
    
45. DeleteDC(hDC);
    
46. if (iBits <= 1)  wBitCount = 1;
    
47. else if (iBits <= 4)  wBitCount = 4;
    
48. else if (iBits <= 8)  wBitCount = 8;
    
49. else      wBitCount = 24;
    
50. 
    
51. GetObject(hBitmap, sizeof(Bitmap), (LPSTR)&Bitmap);
    
52. bi.biSize  = sizeof(BITMAPINFOHEADER);
    
53. bi.biWidth  = Bitmap.bmWidth;
    
54. bi.biHeight  = Bitmap.bmHeight;
    
55. bi.biPlanes  = 1;
    
56. bi.biBitCount  = wBitCount;
    
57. bi.biCompression = BI_RGB;
    
58. bi.biSizeImage  = 0;
    
59. bi.biXPelsPerMeter = 0;
    
60. bi.biYPelsPerMeter = 0;
    
61. bi.biClrImportant = 0;
    
62. bi.biClrUsed  = 0;
    
63. 
    
64. dwBmBitsSize = ((Bitmap.bmWidth * wBitCount + 31) / 32) * 4 * Bitmap.bmHeight;
    
65. 
    
66. hDib = GlobalAlloc(GHND,dwBmBitsSize + dwPaletteSize + sizeof(BITMAPINFOHEADER));
    
67. lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);
    
68. *lpbi = bi;
    
69. 
    
70. hPal = GetStockObject(DEFAULT_PALETTE);
    
71. if (hPal)
    
72. {
    
73. hDC = ::GetDC(NULL);
    
74. hOldPal = ::SelectPalette(hDC, (HPALETTE)hPal, FALSE);
    
75. RealizePalette(hDC);
    
76. }
    
77. 
    
78. 
    
79. //得到这个位图的数据
    
80. GetDIBits(hDC, hBitmap, 0, (UINT) Bitmap.bmHeight, (LPSTR)lpbi + sizeof(BITMAPINFOHEADER)
    
81. +dwPaletteSize, (BITMAPINFO *)lpbi, DIB_RGB_COLORS);
    
82. 
    
83. if (hOldPal)
    
84. {
    
85. ::SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
    
86. RealizePalette(hDC);
    
87. ::ReleaseDC(NULL, hDC);
    
88. }
    
89. 
    
90. fh = CreateFile(filePath, GENERIC_WRITE,0, NULL, CREATE_ALWAYS,
    
91. FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);
    
92. 
    
93. if (fh == INVALID_HANDLE_VALUE)  
    
94. return ;
    
95. 
    
96. bmfHdr.bfType = 0x4D42; // "BM"
    
97. dwDIBSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + dwPaletteSize + dwBmBitsSize;
    
98. bmfHdr.bfSize = dwDIBSize;
    
99. bmfHdr.bfReserved1 = 0;
    
100. bmfHdr.bfReserved2 = 0;
     
101. bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER) + dwPaletteSize;
     
102. 
     
103. WriteFile(fh, (LPSTR)&bmfHdr, sizeof(BITMAPFILEHEADER), &dwWritten, NULL);
     
104. WriteFile(fh, (LPSTR)lpbi, dwDIBSize, &dwWritten, NULL);
     
105. 
     
106. GlobalUnlock(hDib);
     
107. GlobalFree(hDib);
     
108. CloseHandle(fh);
     
109. }

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