VC Invoke External Program interface

(1) system ()

Function Name: System

Function: Issue a DOS command

Usage: int system (char *command);

Note: The system function has been included in the standard C library and can be directly invoked

return value

=-1: Error occurred

= 0: The call succeeded but no child processes appear

>0: ID of the child process that successfully exited

Sample:

System ("D:\\game.exe");

System ("Mmc.exe \" "C:\\windows\\system32\\gpedit.msc\");

(2) WinExec ()

Function Prototypes:

UINT WINAPI WinExec (

__in LPCSTR lpCmdLine,

__in UINT ucmdshow);

Parameter description:

lpCmdLine,//command path

Ucmdshow,//display mode, there are 11 kinds, you can check the MSDN ShowWindow function

return value:

Success, the return value is greater than 31

Returns 0 indicating a memory or resource overflow

Return Error_bad_format indicates that the EXE file is illegal or corrupted.

Returned error_file_not_found the specified file was not found.

Return Error_path_not_found cannot find the specified path

Sample Example:

WinExec ("Notepad.exe", sw_show); Open Notepad

WinExec ("D:\\Program files\\test\\test.exe", sw_showmaximized); Open Test.exe in a maximized manner (note that the file name must be the same case)