popfont.c

本书介绍了在Microsoft Windows 98、Microsoft Windows NT 4.0和Windows NT 5.0下程序写作的方法。这些程序用C语言编写并使用原始的Windows A

/*------------------------------------------
   POPFONT.C -- Popup Editor Font Functions
  ------------------------------------------*/

#include <windows.h>
#include <commdlg.h>

static LOGFONT logfont ;
static HFONT   hFont ;

BOOL PopFontChooseFont (HWND hwnd)
{
     CHOOSEFONT cf ;
     
     cf.lStructSize    = sizeof (CHOOSEFONT) ;
     cf.hwndOwner      = hwnd ;
     cf.hDC            = NULL ;
     cf.lpLogFont      = &logfont ;
     cf.iPointSize     = 0 ;
     cf.Flags          = CF_INITTOLOGFONTSTRUCT | CF_SCREENFONTS | CF_EFFECTS ;
     cf.rgbColors      = 0 ;
     cf.lCustData      = 0 ;
     cf.lpfnHook       = NULL ;
     cf.lpTemplateName = NULL ;
     cf.hInstance      = NULL ;
     cf.lpszStyle      = NULL ;
     cf.nFontType      = 0 ;               // Returned from ChooseFont
     cf.nSizeMin       = 0 ;
     cf.nSizeMax       = 0 ;
     
     return ChooseFont (&cf) ;
}

void PopFontInitialize (HWND hwndEdit)
{
     GetObject (GetStockObject (SYSTEM_FONT), sizeof (LOGFONT), 
                (PTSTR) &logfont) ;

     hFont = CreateFontIndirect (&logfont) ;
     SendMessage (hwndEdit, WM_SETFONT, (WPARAM) hFont, 0) ;
}

void PopFontSetFont (HWND hwndEdit)
{
     HFONT hFontNew ;
     RECT  rect ;
     
     hFontNew = CreateFontIndirect (&logfont) ;
     SendMessage (hwndEdit, WM_SETFONT, (WPARAM) hFontNew, 0) ;
     DeleteObject (hFont) ;
     hFont = hFontNew ;
     GetClientRect (hwndEdit, &rect) ;
     InvalidateRect (hwndEdit, &rect, TRUE) ;
}

void PopFontDeinitialize (void)
{
     DeleteObject (hFont) ;
}