::PostMessage(hWndPrev,WM_UPDATA_CAIGOUFROMOLD,0,0)2003下运行正常在XP下报错
::PostMessage(hWndPrev,WM_UPDATA_CAIGOUFROMOLD,0,0)2003下运行正常在XP下报错

[解决办法]
WM_UPDATA_CAIGOUFROMOLD值是不是大于65535?