用ShellExecute的问题

ShellExecute(Handle,'Open',PChar('mailto:邮件地址?Subject=标题'),nil,nil,SW_SHOWNORMAL);
这样可以有邮件地址和标题,那么如何再加进去内容呢?
[134 byte] By [anxue-Roland] at [2007-12-11]
# 1
ShellExecute(handle, 'open','mailto:suny@163.com?BCC=1234,58&subject=主题&body=正文', nil,nil, SW_SHOWNORMAL);
suny_2001-小鱼儿 at 2007-10-21 > top of Msdn China Tech,Delphi,VCL组件开发及应用...
# 2
ShellExecute(Handle,'Open',PChar('mailto:邮件地址?Subject=标题&cc=发信人地址&BCC=密件抄送&body=正文内容'),nil,nil,SW_SHOWNORMAL);
torble-阿裕 at 2007-10-21 > top of Msdn China Tech,Delphi,VCL组件开发及应用...
# 3
ShellExecute(Handle,'Open',PChar('mailto:邮件地址?Subject=标题&Body=abcd'),nil,nil,SW_SHOWNORMAL);
# 4
up
wangwpf-渝 at 2007-10-21 > top of Msdn China Tech,Delphi,VCL组件开发及应用...