VC画图函数

vc绘图工具、颜色和绘图函数

1、画笔

有两种形式创建画笔

一是直接通过GetStockObject()函数来调用

二是通过创建画笔来调用

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

创建画笔后必须调用SelectObject函数来将起选入设备环境;

删除画笔可通过DeleteObject 函数来实现;

2、画刷

创建画刷

一是通过GetStockObject函数来调用

二是通过调用CreateSolidBrush 和CreateHatchBrush来创建画刷

HBRUSH CreateSolidBrush( COLORREF crColor // brush color value );
HBRUSH CreateHatchBrush( int fnStyle// hatch style COLORREF clrref // color value );
3、颜色
通过RGB函数来实现;
4、常用的绘图函数
设置画笔当前的位置函数MoveToEx
BOOL MoveToEx( HDC hdc// handle to device context int X// x-coordinate of new current positionint Y// y-coordinate of new current position LPPOINT lpPoint // pointer to old current position);
从当前位置向指定坐 点画直线的函数LineTo
BOOL LineTo( HDC hdc// device context handle int nXEnd// x-coordinate of line's ending pointint nYEnd // y-coordinate of line's ending point );
从当前位置开始,依次用线段连接lpPoints中指定各点的函数Polyline
BOOL Polyline( HDC hdc// handle to device context CONST POINT *lppt// pointer to array containing endpoints int cPoints // number of points in the array );
椭圆弧线Arc
BOOL Arc( HDC hdc// handle to device context int nLeftRect// x-coord of bounding rectangle's upper-left corner int nTopRect// y-coord of bounding rectangle's upper-left corner intnRightRect// x-coord of bounding rectangle's lower-right corner int nBottomRect// y-coord of bounding rectangle's lower-right corner int nXStartArc// first radial ending point intnYStartArc// first radial ending point int nXEndArc// second radial ending point int nYEndArc// second radial ending point );
画一个饼图并用当前的画刷进行填充Pie
BOOL Pie( HDC hdc// handle to device context int nLeftRect// x-coord of bounding rectangle's upper-left corner int nTopRect// y-coord of bounding rectangle's upper-left corner intnRightRect// x-coord of bounding rectangle's lower-right corner int nBottomRect// y-coord of bounding rectangle's lower-right corner int nXRadial1// x-coord of first radial's endpoint intnYRadial1// y-coord of first radial's endpoint int nXRadial2// x-coord of second radial's endpoint int nYRadial2 // y-coord of second radial's endpoint );
画一个矩形,并填充Rectangle
BOOL Rectangle( HDC hdc// handle to device context int nLeftRect// x-coord of bounding rectangle's upper-left corner int nTopRect// y-coord of bounding rectangle's upper-left cornerint nRightRect// x-coord of bounding rectangle's lower-right corner int nBottomRect // y-coord of bounding rectangle's lower-right corner );
画一个椭圆并填充Ellipse
BOOL Ellipse( HDC hdc// handle to device context int nLeftRect// x-coord of bounding rectangle's upper-left corner int nTopRect// y-coord of bounding rectangle's upper-left cornerivc绘图工具、颜色和绘图函数

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