halcon在界面上等待鼠标拖拽任意画两根线并测出其角度

import win.ui;
/*DSG{{*/
var winform = win.form(text="aardio form";right=759;bottom=469;parent=...)
winform.add(
button={cls="button";text="button";left=7;top=359;right=183;bottom=462;z=2};
picturebox={cls="picturebox";left=285;top=0;right=760;bottom=470;z=1}
)
/*}}*/

import halconc;

var x,y,width,height = winform.picturebox.getPos();
	var ret,Hwindow = halconc.open_window(0,0,width,height,winform.picturebox.hwnd,"visible", "",0);
	var ret = halconc.set_line_width(Hwindow,3);
	var ret = halconc.set_color(Hwindow,"green");
winform.button.oncommand = function(id,event){
	
	var ret,Row1, Column1, Row2, Column2 = halconc.draw_line (Hwindow, 0,0,0,0);
	var ret = halconc.disp_line (Hwindow, Row1, Column1, Row2, Column2);
	var ret = halconc.set_color(Hwindow,"red");
	var ret,Row11, Column11, Row21, Column21 = halconc.draw_line (Hwindow, 0,0,0,0);
	var ret = halconc.disp_line (Hwindow, Row11, Column11, Row21, Column21);
	var ret,Angle = halconc.angle_ll (Row1, Column1, Row2, Column2, Row11, Column11, Row21, Column21, 0)
	var ret,AngleDeg = halconc.tuple_deg (Angle, 0)
	var htab = {};
	//table.push(htab,Hwindow);
	//var ret = halconc.T_disp_text(htab,"jiaodu:"++AngleDeg,"window", Row11, Column11, 'black', , );
	winform.msgbox(AngleDeg)
}

winform.enableDpiScaling();
winform.show();

win.loopMessage();
return winform;