Add AppMutex to setup

[Another_MM_User]

I see that MediaMonkey.exe has an application mutant (mutex). It would be useful to use it in the InnoSetup script to prevent installing/uninstalling when MediaMonkey is running.
...

Code: Select all

[Setup]
...
AppMutex=MediaMonkey

Also it might be useful to use a setup mutex to prevent two instances of the setup.

Code: Select all

[Code]
// Create a constant for the installer
const installer_mutex_name = 'mediamonkey_setup_mutex';

...

function InitializeSetup(): Boolean;
begin
	// Create a mutex for the installer and if it's already running then expose a message and stop installation
	Result := True;
	if CheckForMutexes(installer_mutex_name) then begin
		if not WizardSilent() then
			MsgBox(ExpandConstant('{cm:SetupIsRunningWarningInstall,MediaMonkey}'), mbError, MB_OK);
			Result := False;
		end
		else begin
		CreateMutex(installer_mutex_name);
	end;
end;

...

function InitializeUninstall(): Boolean;
begin
	Result := True;
	if CheckForMutexes(installer_mutex_name) then begin
		if not WizardSilent() then
			MsgBox(ExpandConstant('{cm:SetupIsRunningWarningUninstall,MediaMonkey}'), mbError, MB_OK);
		Result := False;
		end
		else begin
		CreateMutex(installer_mutex_name);
	end;
end;

[CustomMessages]
en.SetupIsRunningWarningInstall=%1`s setup is already running!
en.SetupIsRunningWarningUninstall=%1`s setup is already running!

The above is just an example which works, but you can customize it to fit your needs.

[Another_MM_User]

I don't think this belongs to the Wishlist, because IMO every descent installer should do a check for the things I mentioned before. It might not be critical, but it's a must.
But anyway, it's your choice at last.

[nohitter151]

Good idea. http://www.ventismedia.com/mantis/view.php?id=5207

[jiri]

This will be added in the next build. (Only the check for MM running, not the check for two setup instances.)

Thanks,
Jiri

[nynaevelan]

This is a major PITA and inconvenience when you have more than one installation of MM and you are trying to install to another instance. Can this be configurable to give the user the option to continue installation??

Nyn