MFC实现小车沿轨迹运行的动态显示

[chenyinlin]

我需要实现一辆小车（MFC画的一个小方块）按规定的轨迹运行的动态演示，轨迹为由A（150,150）到B（350,150）再到C（550,300），轨迹为MFC绘图画出的红直线，求大神用代码简单实现一下小车沿直线的运行，（代码关键地方及步骤请注释一下），请联系QQ：985178256，谢谢！

[vcf_reader]

不停地消隐、不停地重绘。

[赵4老师]

LineDDA The LineDDA function determines which pixels should be highlighted for a line defined by the specified starting and ending points. BOOL LineDDA( int nXStart, // x-coordinate of line's starting point int nYStart, // y-coordinate of line's starting point int nXEnd, // x-coordinate of line's ending point int nYEnd, // y-coordinate of line's ending point LINEDDAPROC lpLineFunc, // pointer to callback function LPARAM lpData // pointer to application-defined data ); Parameters nXStart Specifies the x-coordinate of the line's starting point. nYStart Specifies the y-coordinate of the line's starting point. nXEnd Specifies the x-coordinate of the line's ending point. nYEnd Specifies the y-coordinate of the line's ending point. lpLineFunc Pointer to an application-defined callback function. For more information, see the LineDDAProc callback function. lpData Pointer to the application-defined data. Return Values If the function succeeds, the return value is nonzero. If the function fails, the return value is zero. Windows NT: To get extended error information, callGetLastError. Remarks The LineDDA function passes the coordinates for each point along the line, except for the line's ending point, to the application-defined callback function. In addition to passing the coordinates of a point, this function passes any existing application-defined data. The coordinates passed to the callback function match pixels on a video display only if the default transformations and mapping modes are used. QuickInfo Windows NT: Requires version 3.1 or later. Windows: Requires Windows 95 or later. Windows CE: Unsupported. Header: Declared in wingdi.h. Import Library: Use gdi32.lib. See Also Lines and Curves Overview, Line and Curve Functions, LineDDAProc

[向立天]

付费考虑出手