关于CFont的小白问题!

Question

CFont font = CreateFont(......);
用后用释放资源吗??

Answer 1

要的，GDI资源用完后都要释放

Answer 2

// The code fragment shows how to create a font object,
// select the font object into a DC (device context) for text
// drawing, and finally delete the font object.// Initializes a CFont object with the specified characteristics. 
CFont font;
VERIFY(font.CreateFont(
   12,                        // nHeight
   0,                         // nWidth
   0,                         // nEscapement
   0,                         // nOrientation
   FW_NORMAL,                 // nWeight
   FALSE,                     // bItalic
   FALSE,                     // bUnderline
   0,                         // cStrikeOut
   ANSI_CHARSET,              // nCharSet
   OUT_DEFAULT_PRECIS,        // nOutPrecision
   CLIP_DEFAULT_PRECIS,       // nClipPrecision
   DEFAULT_QUALITY,           // nQuality
   DEFAULT_PITCH | FF_SWISS,  // nPitchAndFamily
   _T("Arial")));                 // lpszFacename// Do something with the font just created...
CClientDC dc(this);  
CFont* def_font = dc.SelectObject(&font);
dc.TextOut(5, 5, _T("Hello"), 5);
dc.SelectObject(def_font);// Done with the font.  Delete the font object.
font.DeleteObject(); 

Answer 3

貌似不用CFont的析构函数会做这些个事情的。

Answer 4

MFC封装的确是不用特别担心这些问题
不过最好还是养成用完就释放的习惯

Answer 5

谢谢大家啊.还有一个问题
         CFont *Font1;
CFont *Font2; 
LOGFONT lf;  
Font1 =new CFont;
Font2 =new CFont;
Font1->CreatePointFont(200,L"华文隶书");
Font2->CreatePointFont(200,L"华文隶书");

Font1->GetLogFont(&lf);
Font2->GetLogFont(&lf);
Font1->DeleteObject();
Font2->DeleteObject();
Font1->CreateFontIndirect(&lf);
Font2->CreateFontIndirect(&lf);
        m_StaticName.SetFont(Font1,true);
m_StaticWish.SetFont(Font2,true);
Font1，改不了字体,可以改大小,Font2就什么都能改.为什么