MFC CFont Sample

MFC CFont

CFont class encapsulates the functionalities needed to manipulate the Fonts in Windows programming. A font can be created in 4 ways with a CFont class using CreateFont, CreateFontIndirect, CreatePointFont, or CreatePointFontIndirectfunctions. This CFont Samples page tries to give a piece of sample code for all of the above functions.

CFont Sample for using CFont :: CreateFont:
   The following CFont sample illustrates how to create a font using CreateFont function of the CFont class.
 

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   CClientDC dc(this);
   CFont l_font;
   l_font.CreateFont(14, 0, 0, 0, FW_NORMAL,
   FALSE, FALSE, FALSE, 0, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,   DEFAULT_QUALITY, DEFAULT_PITCH | FF_ROMAN, "Times New Roman");

   CFont* l_old_font = dc.SelectObject(&l_font); dc.TextOut(50, 50, "Hello World");    
   dc.SelectObject(l_old_font);
   // Delete the font object. 
   l_font.DeleteObject(); 

 

 

 

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   In the above CFont Sample, the CreateFont function uses all default parameters (either 0 or Default constants), except for the height parameter. If CreateFont is called as above, the MFC framework will select the best fit parameters by itself and create a font accordingly. 

CFont Sample for using CFont :: CreateFontIndirect: 
   This part of CFont sample illustrates the usage of CreateFontIndirect. 

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   CClientDC dc(this);
   CFont l_font;
   LOGFONT lf;
   lf.lfHeight = 12;
   strcpy(lf.lfFaceName, "Arial"); // Need a face name "Arial". 
   l_font.CreateFontIndirect(&lf); 
   CFont* l_old_font = dc.SelectObject(&l_font); 
   dc.TextOut(50, 50, "Hello World"); 
   dc.SelectObject(l_old_font); 
   // Delete the font object.
   l_font.DeleteObject(); 

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The LOGFONT is a structure with all members required for the Font object. 

CFont Sample for using CFont :: CreatePointFont:
 This part of the sample illustrates the use of CreatePointFont for creating a font.

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   CClientDC dc(this); 
   CFont l_font; 
   l_font.CreatePointFont(140,"Times New Roman"); 
   CFont* l_old_font = dc.SelectObject(&l_font);
   dc.TextOut(50, 50, "Hello World"); 
   dc.SelectObject(l_old_font); 
   // Delete the font object. 
   l_font.DeleteObject(); 

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The first parameter of the CreatePointFont function is the height of the Font in tenths of a point. The return value of thisfunction is non-zero value if successful. 

CFont Sample for using CFont :: CreatePointFontIndirect: 

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   CClientDC dc(this); 
   CFont l_font; 
   LOGFONT lf;
   lf.lfHeight = 120; 
   strcpy(lf.lfFaceName, "Arial"); // Need a face name "Arial". 
   l_font.CreatePointFontIndirect(&lf); 
   CFont* l_old_font = dc.SelectObject(&l_font); 
   dc.TextOut(50, 60, "Hello World"); 
   dc.SelectObject(l_old_font); 
   //  Delete the font object. 
   l_font.DeleteObject(); 

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   Usually it is better to use either CreatePointFont or CreatePointFontIndirect functions as they reduce the head-ache of thinking about the width, weight and such parameters.
   Also, in the above CFont sample the l_font is deleted in the end. It is a good programming practice as advised by Windows Programming manuals to delete the Objects after removing them from the current device context.