易语言绘制过点平滑曲线源码

系统结构:画平滑曲线,画直线组,GdiPlus初始化,GdiPlus销毁,GdiplusShutdown,GdiplusStartup,GdipCreateFromHWND,GdipDeleteGraphics,GdipCreatePen1,GdipDeletePen,GdipDrawCurve3,GdipDrawLines,GdipSetSmoothingMode,

======窗口程序集1
           |  |
           |  |------ __启动窗口_创建完毕
           |  |
           |  |------ __启动窗口_将被销毁
           |  |
           |  |------ _按钮2_被单击
           |  |
           |  |------ 画平滑曲线
           |  |
           |  |------ 画直线组
           |  |
           |  |------ GdiPlus初始化
           |  |
           |  |------ GdiPlus销毁
           |  |
           |  |
======调用的Dll
           |  |
           |  |---[dll]------   GdiplusShutdown
           |  |
           |  |---[dll]------   GdiplusStartup
           |  |
           |  |---[dll]------   GdipCreateFromHWND
           |  |
           |  |---[dll]------   GdipDeleteGraphics
           |  |
           |  |---[dll]------   GdipCreatePen1
           |  |
           |  |---[dll]------   GdipDeletePen
           |  |
           |  |---[dll]------   GdipDrawCurve3
           |  |
           |  |---[dll]------   GdipDrawLines
           |  |
           |  |---[dll]------   GdipSetSmoothingMode

调用的DLL命令:

.DLL命令 GdiplusShutdown, 整数型, "gdiplus", "GdiplusShutdown"
    .参数 token, 整数型

.DLL命令 GdiplusStartup, 整数型, "gdiplus", "GdiplusStartup"
    .参数 token, 整数型, 传址
    .参数 inputbuf, GdiplusStartupInput
    .参数 outputbuf, 整数型

.DLL命令 GdipCreateFromHWND, 整数型, "gdiplus", "GdipCreateFromHWND"
    .参数 hWnd
    .参数 graphics, , 传址

.DLL命令 GdipDeleteGraphics, 整数型, "gdiplus", "GdipDeleteGraphics"
    .参数 graphics

.DLL命令 GdipCreatePen1, 整数型, "gdiplus", "GdipCreatePen1", , ARGB color, REAL width, GpUnit unit, GpPen **pen
    .参数 color
    .参数 width, 小数型
    .参数 unit
    .参数 pen, , 传址

.DLL命令 GdipDeletePen, 整数型, "gdiplus", "GdipDeletePen", , GdipDeletePen(GpPen *pen);
    .参数 pen

.DLL命令 GdipDrawCurve3, 整数型, "gdiplus", "GdipDrawCurve3"
    .参数 graphics
    .参数 pen
    .参数 points, POINTF, 数组
    .参数 count
    .参数 offset
    .参数 numberOfSegments
    .参数 tension, 小数型

.DLL命令 GdipDrawLines, 整数型, "gdiplus", "GdipDrawLines"
    .参数 graphics
    .参数 pen
    .参数 points, POINTF, 数组
    .参数 count

.DLL命令 GdipSetSmoothingMode, , "gdiplus", "GdipSetSmoothingMode"
    .参数 graphics
    .参数 n