列表框listbox自绘前景色背景色_编程入门教程

 import win.ui;

/*DSG{{*/

var winform = win.form(text="AAuto Form";right=472;bottom=344;parent=...)

winform.add(

listbox={cls="listbox";left=12;top=11;right=458;bottom=332;bgcolor=16777215;db=1;dl=1;dr=1;dt=1;font=LOGFONT(name='宋体');items={};style=96;vscroll=1;z=1}

)

/*}}*/



winform.listbox.onMeasureItem = function(measureItem){ 

         measureItem.itemHeight = 20; 

 }  

 import gdip.graphics;



 winform.listbox.onDrawItem = function(drawItem){ 

 

        var graphics = gdip.graphics(drawItem.hDC) 

        graphics.smoothingMode = 4/*_GdipSmoothingModeAntiAlias*/ 

        graphics.compositingQuality = 2/*_GdipCompositingQualityHighQuality*/  

         

        //绘制高亮背景色 

        var bgbrush,color; 

        var rcf = drawItem.rcItem.float(); 

        

        if(drawItem.itemID%2){//行背景色

            color = 0xff00e0ef;

        }else {

            color = 0xffFFe0ef;

        }

        

        bgbrush = gdip.solidBrush(color)   

        graphics.fillRectangle(bgbrush,rcf.x,rcf.y,rcf.width,rcf.height); 

        bgbrush.delete(); 

        

        //输出标题 

        var strformat = ..gdip.stringformat();   

        strformat.align = 1/*_GdipStringAlignmentCenter*/ ; 

        strformat.lineAlign = 1/*_GdipStringAlignmentCenter*/ ; 

        var tbrush = ..gdip.solidBrush( 0xFF000000 );//文字颜色 

        var font = gdip.font(drawItem.hDC,::LOGFONT( name="MS Shell Dlg";h = 11.5))  

        var text = winform.listbox.getItemText(drawItem.itemID+1);  

        graphics.drawString( text ,font,rcf, strformat,tbrush);   

        tbrush.delete(); 

        font.delete(); 

        graphics.delete(); 

  

 } 



winform.listbox.add("腾讯QQ|一款即时聊天软件"); 

winform.listbox.add("Microsoft Office|一款办公套装"); 

winform.listbox.add("aardio|桌面软件快速开发"); 

winform.listbox.add("简码编程|www.jianma123.com"); 



winform.show(); 

win.loopMessage();