GDI绘图类示例代码-CFont CPen CBrush

事先定义枚举类型标示绘制类型：

enum {Fonts, Pens, Brushes} m_Display;

CFont类用法：

void CGDISampleView::ShowFonts(CDC* pDC){ LOGFONT logFont;//定义构建CFont对象的结构体 logFont.lfHeight = 8; logFont.lfWidth = 0; logFont.lfEscapement = 0; logFont.lfOrientation = 0; logFont.lfWeight = FW_NORMAL; logFont.lfItalic = 0; logFont.lfUnderline = 0; logFont.lfStrikeOut = 0; logFont.lfCharSet = ANSI_CHARSET; logFont.lfOutPrecision = OUT_DEFAULT_PRECIS; logFont.lfClipPrecision = CLIP_DEFAULT_PRECIS; logFont.lfQuality = PROOF_QUALITY; logFont.lfPitchAndFamily = VARIABLE_PITCH|FF_ROMAN; strcpy(logFont.lfFaceName , "Times New Roman");

 UINT position = 0;

 for(UINT x = 0; x<8 ; ++x) {  logFont.lfHeight = 16 +(x * 8);   CFont font;

  font.CreateFontIndirect(&logFont);  CFont * oldFont = pDC ->SelectObject(&font);//存储旧的字体句柄

  position += logFont.lfHeight;  pDC ->TextOut(20, position, "A Sample Font.");

  pDC ->SelectObject(oldFont);//还原设备环境 }}

CPen用法：

void CGDISampleView::ShowPens(CDC *pDC){ UINT position = 10; INT32 for(UINT x=0; x<16; ++x) {  CPen pen(PS_SOLID, x*2+1, RGB(0,0,255));  CPen* oldPen = pDC ->SelectObject(&pen);

  position += x*2+10;  pDC ->MoveTo(20,position);  pDC ->LineTo(400,position);

  pDC ->SelectObject(oldPen); }}

CBrush类用法：

void CGDISampleView::ShowBrushes(CDC *pDC){  UINT position = 0; CPen pen(PS_SOLID, 5, RGB(255,0,255)); CPen* oldPen = pDC ->SelectObject(&pen);

 for(UINT x=0; x<7; ++x)//x标识画刷的七种样式 {  CBrush *brush;    if(x == 6)   brush = new CBrush(RGB(0,255,0));  else   brush = new CBrush(x,RGB(0,160,0));//设置画刷样式

  CBrush *oldBrush = pDC ->SelectObject(brush);

  position += 50;  pDC ->Rectangle(20,position,400,position+40);    pDC ->SelectObject(oldBrush);  delete brush; }

 pDC ->SelectObject(oldPen);

}