求助：ucgui 显示出现拖尾现象
http://cache.amobbs.com/bbs_upload782111/files_29/ourdev_553473.jpg(原文件名:IMG0013A.jpg)
如图不知是何缘故请高手帮忙，谢谢
函数如下：
handle_program_clientwin2=WM_CreateWindowAsChild(490,195,299,180,handle_program_clientwin0,WM_CF_SHOW|WM_CF_MEMDEV,&program_clientwin2_callback,0);//这是创建函数
/*回调函数*/
WM_HWIN program_clientwin2_callback(WM_MESSAGE*pMsg)
{
switch(pMsg->MsgId)
{
case WM_PAINT:
if(!b)
{
GUI_SetColor(GUI_BLACK);
// GUI_SetBkColor(GUI_BLACK);
GUI_Clear();
// GUI_SetTextMode(GUI_TEXTMODE_TRANS);
b=1;
}
GUI_SetColor(GUI_GREEN);
GUI_SetFont(&GUI_FontHZ_MingLiU);
GUI_DispStringAt(" Cut Speed:2100mm/s",15,20);
GUI_DispStringAt("FEED SPEED:xxxxmm/min",15,55);
GUI_DispStringAt("FEED Status:OFF",15,90);
GUI_DispStringAt("OPERATE Status:STOP",15,125);
GUI_SetColor(GUI_BLACK);
break;
default :WM_DefaultProc(pMsg);
}
}
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