Windows GDI：画笔Pen使用总结

一、获取系统画笔

1.Win32

HGDIOBJ GetStockObject(
int fnObject   // stock object type
);

系统画笔类型如下:

BLACK_PEN

WHITE_PEN

NULL_PEN

DC_PEN

示例:

HPEN hBlackPen = (HPEN)::GetStockObject(BLACK_PEN);

2.MFC

示例:

HPEN hBlackPen = (HPEN)::GetStockObject(BLACK_PEN);
CPen blackPen;
blackPen.Attach(hBlackPen);

或

HPEN hBlackPen = (HPEN)::GetStockObject(BLACK_PEN);
CPen* pBlackPen = CPen::FromHandle(hBlackPen);

二、创建一般画笔

1.Win32

HPEN CreatePen(
int fnPenStyle,    // pen style
int nWidth,        // pen width
COLORREF crColor   // pen color
);

画笔线型如下:

PS_SOLID

PS_DASH

PS_DOT

PS_DASHDOT

PS_DASHDOTDOT

PS_NULL

PS_INSIDEFRAME

2.MFC

BOOL CPen::CreatePen(
int nPenStyle,
int nWidth,
COLORREF crColor
);