发一个MINIGUI下的绘2D曲线的代码

struct  _frame_coordinates
{
    int X_Origins;//原点X坐标，原点在对话框中的位置 
    int Y_Origins;//原点Y坐标，原点在对话框中的位置 
    int X_W;// X宽度 ，坐标宽 
    int Y_W;// Y宽度 ，坐标宽 
    int X_Min;//X_Min转化坐标后原点坐标，一般情况下都为0
    int Y_Min;//Y_Min转化坐标后原点坐标，一般情况下都为0
    int X_Max;// X_Max 转化坐标后X轴要画的点数，光谱仪中为2048
    int Y_Max;// Y_Max  转化坐标后Y轴最高点的坐标，光谱仪中为6000
};
struct  _frame_coordinates myCoordinates;
void ShowLine(HDC neicun_hdc,struct _frame_coordinates c_Line, unsigned short yPix[])
{
    int i,j,X0,Y0,X1,Y1;
    char str[10],strShow[20];
    char str1[10],strShow1[20];
    double xPerPix,yPerPix;
    LOGFONT* mg_font,*mg_font1;
    sprintf(str,"%d",c_Line.Y_Max/3);
    sprintf(str1,"%d",c_Line.Y_Max*2/3);
    mg_font = CreateLogFont (NULL, "song", "GB2312",
         FONT_WEIGHT_REGULAR, FONT_SLANT_ROMAN, FONT_FLIP_NIL,
         FONT_OTHER_NIL, FONT_UNDERLINE_NONE, FONT_STRUCKOUT_NONE,
         12, 0);
    SelectFont(neicun_hdc, mg_font);
    SetBkColor (neicun_hdc, COLOR_black);            
    SetTextColor(neicun_hdc,RGB2Pixel(neicun_hdc, 255, 255, 255));     
    SetBrushColor(neicun_hdc, RGB2Pixel(neicun_hdc, 0x0, 0x0, 0x0));//, 0x80));
     SetPenColor(neicun_hdc, RGB2Pixel(neicun_hdc, 0xff, 0xff, 0xff));//, 0xff)); 
     FillBox (neicun_hdc, 3, 51, 314, 169); 
     LineEx (neicun_hdc, c_Line.X_Origins-10,c_Line.Y_Origins, 320, c_Line.Y_Origins);    //X坐标
     LineEx (neicun_hdc, c_Line.X_Origins, c_Line.Y_Origins-c_Line.Y_W, c_Line.X_Origins, c_Line.Y_Origins);//y坐标
     
    //分割线
     SetPenType (neicun_hdc, PT_ON_OFF_DASH);
     SetPenDashes (neicun_hdc, 0, "\1\1", 2);
     TextOut(neicun_hdc, c_Line.X_Origins,c_Line.Y_Origins-c_Line.Y_W/3-15, str);
     LineEx (neicun_hdc, c_Line.X_Origins,c_Line.Y_Origins-c_Line.Y_W/3, 320, c_Line.Y_Origins-c_Line.Y_W/3);
    TextOut(neicun_hdc, c_Line.X_Origins,c_Line.Y_Origins-c_Line.Y_W*2/3-15, str1);
     LineEx (neicun_hdc, c_Line.X_Origins,c_Line.Y_Origins-c_Line.Y_W*2/3, 320, c_Line.Y_Origins-c_Line.Y_W*2/3);

     LineEx (neicun_hdc, c_Line.X_Origins+c_Line.X_W/4, c_Line.Y_Origins-c_Line.Y_W, c_Line.X_Origins+c_Line.X_W/4, c_Line.Y_Origins);
     LineEx (neicun_hdc, c_Line.X_Origins+c_Line.X_W*2/4, c_Line.Y_Origins-c_Line.Y_W, c_Line.X_Origins+c_Line.X_W*2/4, c_Line.Y_Origins);
    LineEx (neicun_hdc, c_Line.X_Origins+c_Line.X_W*3/4, c_Line.Y_Origins-c_Line.Y_W, c_Line.X_Origins+c_Line.X_W*3/4, c_Line.Y_Origins);
    X0=c_Line.X_Origins;
    Y0=c_Line.Y_Origins+(c_Line.Y_W/c_Line.Y_Max)*yPix[0];//初如化第一个点的坐标
    xPerPix=(double)c_Line.X_W/(double)c_Line.X_Max;
    yPerPix=(double)c_Line.Y_W/(double)c_Line.Y_Max;
    for(i=1;i<c_Line.X_Max;i++)
    {            
        X1=c_Line.X_Origins+xPerPix*i;//变换坐标
        Y1=c_Line.Y_Origins-yPerPix*yPix[i];//变换坐标
        LineEx (neicun_hdc, X0, Y0, X1, Y1);
        X0=X1;
        Y0=Y1;
    }
}

使用如下：

 

        myCoordinates.X_Origins=1;
        myCoordinates.Y_Origins=218;
        myCoordinates.X_W=315;
        myCoordinates.Y_W=165;
        myCoordinates.X_Max=2048;
        myCoordinates.Y_Max=6000;