macOS parameters for starting program

macfreaker

macrumors newbie

Original poster

Aug 19, 2008

9

0

Belgium

• Sep 6, 2008

• #1

Since i'm new in programming in xcode (cocoa), i have a question. I'm making a program that must start another program with parameters. The other program is vlc and must be started with parameters to stream video and audio from my sat receiver (dreambox) to my mac. Here is already a part of my code. Maybe someone can tell me how to add paramters.

Code:

#import "MAFoo.h"

@implementation MAFoo
- (IBAction)startknop:(id)sender {
	
	NSWorkspace * ws = [NSWorkspace sharedWorkspace]; 
	[ws launchApplication:@"VLC"]; 
}

- (IBAction)stopvlcknop:(id)sender {
    
}

-(void)awakeFromNib
{
	//NSString *string = [dreamboxip stringValue];	
	
//	[dreamboxip setTextView:"192.168.0.100"];
	[dreamboxport setIntValue:8001];
}

@end

 

robbieduncan

Moderator emeritus

Jul 24, 2002

25,611

893

Harrogate

• Sep 6, 2008

• #2

Don't use NSWorkspace. Use NSTask

 

macfreaker

macrumors newbie

Original poster

Aug 19, 2008

9

0

Belgium

• Sep 6, 2008

• #3

robbieduncan said:

Don't use NSWorkspace. Use NSTask

Click to expand...

I've change it but don't see how to add the parameters.Maybe you can help me. a example of how i did it in AS you can see here:

Code:

-- display dialog dreamboxip
			tell application "VLC"
				OpenURL "http://" & dreamboxip & ":" & dreamboxpoort & "/1:0:1:31E7:45C:35:C00000:0:0:0:"
				play
			end tell

The port and the ip i wil get from a textfield , but how to paste this in the arguments. And i've also a permission error.

 

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robbieduncan

Moderator emeritus

Jul 24, 2002

25,611

893

Harrogate

• Sep 6, 2008

• #4

Read the documentation for NSTask. There are clearly marked methods for setting the arguments.

Also you, as a developer, should be aware that /Applications/VLC.app is a directory, not an executable.

If you are comfortable using AppleScript then why not use AppleScript Studio to make the app?

 

macfreaker

macrumors newbie

Original poster

Aug 19, 2008

9

0

Belgium

• Sep 6, 2008

• #5

robbieduncan said:

Read the documentation for NSTask. There are clearly marked methods for setting the arguments.
Also you, as a developer, should be aware that /Applications/VLC.app is a directory, not an executable.
If you are comfortable using AppleScript then why not use AppleScript Studio to make the app?

Click to expand...

Yeah , was already reading the doc.
I've also changed my code to :

Code:

NSTask *task = [[NSTask alloc] init];
	[task setLaunchPath:@"/Applications/VLC.app/Contents/MacOS/VLC"];

Because you're right.
And i've made this in applescript, but it was to slow .
But thanks anyway for the help.

 

H

hhas

macrumors regular

Oct 15, 2007

126

0

• Sep 6, 2008

• #6

macfreaker said:

Yeah , was already reading the doc.
I've also changed my code to :

Code:

NSTask *task = [[NSTask alloc] init];
	[task setLaunchPath:@"/Applications/VLC.app/Contents/MacOS/VLC"];

Because you're right.
And i've made this in applescript, but it was to slow .
But thanks anyway for the help.

Click to expand...

IIRC, launching GUI applications this way isn't recommended by Apple due to differences in the way that bundle-based Mac applications are launched compared traditional *nix executables. Admittedly, VLC is already a *nix port so may be a bit more forgiving of you bypassing the normal Mac launch procedure.

Still, if it provides an Apple event API for the purpose, that's probably the best (and most official) way to do it, either via NSAppleScript or an ObjC-Apple event bridge.