[翻译]-WinCE 程序设计 (3rd 版)--2.2 输出文本[10]

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// EnumSingleFontFamily - Callback function that enumerates fonts
//
int CALLBACK EnumSingleFontFamily (CONST LOGFONT *lplf,
                                   CONST TEXTMETRIC *lpntm,
                                   DWORD nFontType, LPARAM lParam) {
    PFONTFAMSTRUCT pffs;
  
    pffs = (PFONTFAMSTRUCT) lParam;
    pffs->nNumFonts++;    // Increment count of fonts in family
    return 1;
}
  
//----------------------------------------------------------------
// PaintSingleFontFamily - Callback function that draws a font
//
int CALLBACK PaintSingleFontFamily (CONST LOGFONT *lplf,
                                    CONST TEXTMETRIC *lpntm,
                                    DWORD nFontType, LPARAM lParam) {
    PPAINTFONTINFO ppfi;
    TCHAR szOut[256];
    INT nFontHeight, nPointSize;
    HFONT hFont, hOldFont;
  
    ppfi = (PPAINTFONTINFO) lParam;  // Translate lParam into struct
                                     // pointer.
  
    // Create the font from the LOGFONT structure passed.
    hFont = CreateFontIndirect (lplf);
  
    // Select the font into the device context.
    hOldFont = (HFONT)SelectObject (ppfi->hdc, hFont);
  
    // Compute font size.
    nPointSize = (lplf->lfHeight * 72) /
                 GetDeviceCaps(ppfi->hdc,LOGPIXELSY);
  
    // Format string and paint on display.
    wsprintf (szOut, TEXT ("%s   Point:%d"), lplf->lfFaceName,
              nPointSize);
    ExtTextOut (ppfi->hdc, 25, ppfi->yCurrent, 0, NULL,
                szOut, lstrlen (szOut), NULL);
  
    // Compute the height of the default font.
    nFontHeight = lpntm->tmHeight + lpntm->tmExternalLeading;
    // Update new draw point.
    ppfi->yCurrent += nFontHeight;
    // Deselect font and delete.
    SelectObject (ppfi->hdc, hOldFont);
    DeleteObject (hFont);
    return 1;
}
//================================================================
// Message handling procedures for MainWindow
//
//----------------------------------------------------------------
// MainWndProc - Callback function for application window
//
LRESULT CALLBACK MainWndProc (HWND hWnd, UINT wMsg, WPARAM wParam,
                              LPARAM lParam) {
    INT i;
    //
    // Search message list to see if we need to handle this
    // message.  If in list, call procedure.
    //
    for (i = 0; i < dim(MainMessages); i++) {
        if (wMsg == MainMessages[i].Code)
            return (*MainMessages[i].Fxn)(hWnd, wMsg, wParam, lParam);
    }
    return DefWindowProc (hWnd, wMsg, wParam, lParam);
}
//----------------------------------------------------------------------
// DoCreateMain - Process WM_CREATE message for window.
//