edit1怎么拼接
Winexec('C:\Program Files\WinRAR\WinRAR.exe d:\bf\data.rar'+ edit1.text+'',sw_normal);

edit1.text里的文件路径'd:\bf\'

[解决办法]
Winexec(pchar('C:\Program Files\WinRAR\WinRAR.exe '+ edit1.text),sw_normal);