Running an .exe programmatically

[d00_ape]

I want to run this file C:\gzip.exe like I do in the prompt:

gzip.exe -9 C:\myfile.wrl

How can I make the call with the parameters ?-9? and ?C:\myfile.wrl? ?

[_tux_]

could use the WinExec API.

  Quote

The WinExec function runs the specified application.

This function is provided for compatibility with earlier versions of Windows. For Win32-based applications, use the CreateProcess function.

UINT WinExec(

    LPCSTR lpCmdLine, // address of command line

    UINT uCmdShow  // window style for new application

  );

Parameters

lpCmdLine

Points to a null-terminated character string that contains the command line (filename plus optional parameters) for the application to be executed. If the name of the executable file in the lpCmdLine parameter does not contain a directory path, Windows searches for the executable file in this sequence:

1. The directory from which the application loaded.

2. The current directory.

3. The Windows system directory. The GetSystemDirectory function retrieves the path of this directory.

4. The Windows directory. The GetWindowsDirectory function retrieves the path of this directory.

5. The directories listed in the PATH environment variable.

uCmdShow

Specifies how a Windows-based application window is to be shown and is used to supply the wShowWindow member of the STARTUPINFO parameter to the CreateProcess function. For a list of the acceptable values, see the description of the nCmdShow parameter of the ShowWindow function. For a non-Windows - based application, the PIF file, if any, for the application determines the window state.

Return Values

If the function succeeds, the return value is greater than 31.

If the function fails, the return value is one of the following error values:

Value Meaning

0 The system is out of memory or resources.

ERROR_BAD_FORMAT The .EXE file is invalid (non-Win32 .EXE or error in .EXE image).

ERROR_FILE_NOT_FOUND The specified file was not found.

ERROR_PATH_NOT_FOUND The specified path was not found.

Remarks

Win32-based applications should use the CreateProcess function rather than this function. The WinExec function exists in Win32 to provide compatibility with earlier versions of Windows. For more information about how the WinExec function is implemented, see the Remarks section of the LoadModule function.

In Win32, the WinExec function returns when the started process calls the GetMessage function or a time-out limit is reached. To avoid waiting for the time out delay, call the GetMessage function as soon as possible in any process started by a call to WinExec.

  Quote

This function is provided for compatibility with earlier versions of Windows. For Win32-based applications, use the CreateProcess function.

ho hum :) never used that before. but winexec works fine for me :)

Edited September 3, 2004 by _tux_

[bithub]

Use ShellExecute(), or ShellExecuteEx().

[John Veteran]

First of all, what language are you using? :huh:

[smurfiness]

  gameguy said:

First of all, what language are you using? :huh:

Doesn't really matter. Any Windows programming language will let you call an API function.

[Ultra Frosty]

in C , you can use:

system("gzip.exe -9 C:\myfile.wrl");

[bangbang023 Veteran]

  dannysmurf said:

Doesn't really matter. Any Windows programming language will let you call an API function.

Um it does matter because VB won't accept C++ code, Java won't accept BASIC, and so on and so forth.

[gigapixels Veteran]

  dannysmurf said:

Doesn't really matter. Any Windows programming language will let you call an API function.

It could very well be Java... So it kind of does matter...

[smurfiness]

  bangbang023 said:

Um it does matter because VB won't accept C++ code, Java won't accept BASIC, and so on and so forth.

*sigh* Well yes obviously it would have to be translated. But no, the language of the example doesn't matter, because it's a Windows API function. And if the poster can't figure out how to call an API function in his/her programming language of choice, then what language the example is in is probably even LESS relevant; programming lessons would seem to be a bigger priority.

  Quote

It could very well be Java... So it kind of does matter...

True, but then the poster didn't specify, and hasn't come back to specify, so really, s/he'll just have to take whatever is offered.