vc++中HBRUSH的幾種用法

HBRUSH hbr;

第一種: hbr= CreateSolidBrush(RGB(255,0,0));                       //建立單色的畫刷

第二種: hbr= (HBRUSH)GetStockObject(BLACK_BRUSH);   //只能取特定顏色的畫刷,如BLACK_BRUSH,GRAY_BRUSH刷

第三種: hbr= CreatePatternBrush(HBITMAP hbmp);               //獲得位圖畫刷

第四種: hbr = CreateHatchBrush(int fnStyle,                             //建立一種帶陰影的畫刷
                              COLORREF clrref
                               )

第五種: hbr= CreateBrushIndirect(LOGBRUSH);                    //經過LOGBRUSH結構體來取畫刷
  

 typedef struct tagLOGBRUSH { 
    UINT     lbStyle; //畫刷類型
    COLORREF lbColor; //顏色
    LONG     lbHatch; //陰影
 } LOGBRUSH, *PLOGBRUSH;

第六種: hbr= HBRUSH CreateDIBPatternBrush(                   //經過與設備無關位圖建立一個畫刷
     HGLOBAL hglbDIBPacked,  // handle to DIB
     UINT fuColorSpec        // color table data
   );

 

附加：

RECT rc;

    GetWindowRect(&rc);
    ScreenToClient(&rc);

 HDC hdc;

primarysurface->GetDC(&hdc);//獲得

FillRect(hdc,&rc,hbr);//填充一個指定的rc矩形區域

 

 

 

CFont用法 CFont 使用詳解 .

 (2012-04-20 16:01:15)

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標籤：  it

原文：http://blog.csdn.net/noexcuse/article/details/1837888

 

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 CreatePointFontIndirect functions. 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.
 

---

   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(); 

 

 

 

---

   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. 

---

   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(); 

---

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.

---

   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(); 

---

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

CFont Sample for using CFont :: CreatePointFontIndirect: 

---

   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(); 

---

   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. 

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