用ShellExecute调用外部的程序，是不是一定就要用绝对路径

Question

ShellExecute(handle,  'Open',pChar('d:\program\POS_DR\POS_MORE.exe'),nil,  nil,  sw_Show); ShellExecute(handle,  'Open',pChar('POS_MORE.exe'),nil,  pChar('d:\program\POS_DR\'),  sw_Show); 

Answer 1

ShellExecute(handle,  'Open','POS_DR\POS_MORE.exe',nil,  'POS_DR\',  sw_Show); 

Answer 2

改为这样可以吗？ShellExecute(handle,  'Open','POS_DR\POS_MORE.exe',nil,  'POS_DR\',  sw_Show); 

Answer 3

ShellExecute(handle,    'Open',pChar('d:\program\POS_DR\POS_MORE.exe'),nil,    nil,    sw_Show);  ShellExecute(handle,    'Open',pChar('POS_MORE.exe'),nil,    pChar('d:\program\POS_DR\'),    sw_Show);  

Answer 4

pchar是什么意思，
ShellExecute(handle,        'Open',pChar('POS_MORE.exe'),nil,        pChar('d:\program\POS_DR\'),        sw_Show);