Sample code
ShowMessage(ExtractFilePath(ParamStr(0))); //获取程序所在目录
ShowMessage(ExtractFilePath(Application.ExeName)); //获取程序所在目录
ShowMessage(GetCurrentDir + '\'); //获取当前目录
returns the same results
ParamStr:
Returns a specified parameter from the command-line.
Unit
System
Category
command line utilities
Delphi syntax:
function ParamStr(Index: Integer): string;
C++ syntax:
extern PACKAGE AnsiString __fastcall ParamStr(int Index);
Description
ParamStr returns the parameter from the command line that corresponds to Index, or an empty string if Index is greater than ParamCount. For example, an Index value of 2 returns the second command-line parameter.
On Windows, ParamStr(0) returns the path and file name of the executing program (for example, C:\TEST\MYPROG.EXE).
On Linux, ParamStr(0) returns the command used to execute the program, without parameters (for example, ./myprogram). This behavior is dependent on information returned by the shell program and may not be consistent among all shells.
Note: Use double quotes to wrap multiple words as one parameter (such as long file names containing spaces).