Situation
During the installation of our product I detect if our programs are still running (from a previous installation) by using CheckForMutexes. If our programs are still running I pop up a message box (by using MsgBox) that tells the user to close the programs. If the user clicks the ok and they haven't closed our programs, the same message box is displayed. I'd like to display a cancel button in the MsgBox that aborts the installation, which would be desired in the case the user doesn't want to close the running programs.
Question
How can I abort an InnoSetup install programmatically?
Thanks in advance
Take a look at InitializeSetup and Abort in the Inno Setup help. The Abort function will allow the setup to exit.
Call the WizardForm.Close() method.
It will prompt the user if she really wants to cancel the installation.
procedure ExitSetup;
begin
WizardForm.Close;
end;
Related
How to bring the installer to the foreground at every progress page? (Assuming that the person installing the program decides to do other things with the computer in the meantime).
I am using this code to install DirectX and redist:
Inno Setup - Avoid displaying filenames of sub-installers
(look only the part that includes this ProgressPage := CreateOutputProgressPage).
Do not even try this. That ruins user experience.
And Windows actually prevents you from doing that anyway.
If you need to bring user attention to your installer/application, flash its taskbar button.
In Inno Setup based installer, is there a way to change the default selection for the restart option shown on the Finish page if restart is needed ? Please note that I am not asking about how to make the installer never ask for a reboot.
Currently, the restart option shows up with "Yes, restart the computer now" as the default selection and some users of the installer have raised a concern that if they are in a haste, they end up clicking on "Finish" button, thus causing the restart to happen.
I see a similar question here.
Similarly, the restart message box shown on uninstalling comes up with default set to "Yes" button. Is there a way to change that too?
Just select the NoRadio instead of the default YesRadio:
procedure InitializeWizard();
begin
WizardForm.NoRadio.Checked := True;
end;
You cannot change, what button is focused by default on the restart prompt in uninstaller.
I need to change ConfirmUninstall, UninstalledMost (just in case), and UninstalledAll specifically from script to set a condition. Something like this:
if FileExists(ExpandConstant('{app}\Slash.exe')) then
SetupMessage(msgConfirmUninstall) := FmtMessage(SetupMessage(msgConfirmUninstall), ['Dagon Slasher'])
else if FileExists(ExpandConstant('{app}\Frank.exe')) then
SetupMessage(msgConfirmUninstall) := FmtMessage(SetupMessage(msgConfirmUninstall), ['Dagon Frankenstein'])
else
SetupMessage(msgConfirmUninstall) := FmtMessage(SetupMessage(msgConfirmUninstall), ['Dagon Video Tools']);
But this doesn't work. These messages are used in MsgBoxes, so I can't think of any other way. Running in silent mode is not really suitable for me, since setup will run uninstall if the programs (or one of them) has already been installed, so I don't want the user to accidentally uninstall the program by running the setup.
You cannot change these easily, see:
Replace or customize modal uninstallation windows in Inno Setup
Regarding the silent uninstall solution: I do not understand your problem with "setup will run uninstall if the programs (or one of them) has already been installed".
I assume you run the uninstaller only after the user confirms (s)he wants to install the new version, so you actually want to run the uninstaller silently, right?
And anyway, there's nothing that prevents you from running the uninstaller non-silently from your installer, even if the entry in "Add/Remove programs" refers to "silent" installation.
You can use generic messages that covers all setup types:
[Messages]
ConfirmUninstall=Are you sure you want to completely remove this game?
As your uninstall messages depend on a type of the installed application, you can modify the installer to:
Create custom "type" page (like a menu) as the very first one.
Once the user selects the "type", restart the installer with a custom switch (e.g. /APPTYPE=slasher) and exit.
Once the installer is (re-)run with the /APPTYPE, you know from the beginning, what component/type you are installing and hence you can set the AppName accordingly (using a scripted constant).
Of course, you skip the custom "type" page.
This is actually not difficult to implement. The only drawback is that the setup window is "recreated" after the user selects the "type".
I've sketched this solution already in my answer to Inno Setup Change AppName based on component(s) selected.
I am creating and installer for a game using Inno setup and I want to prompt the user and ask them if they want to install DirectX9 (I already have the full installation directx files in a subfolder) and then to install it for them if they say yes or no... I am not sure how to do this and have limited programming knowledge. Please help!
Use this code to show message box with question and Yes/No buttons:
// Ask the user a Yes/No question
if MsgBox('Are you sure?', mbConfirmation, MB_YESNO) = IDYES then
begin
// User clicked Yes
// Install the DirectX now... (see below)
end;
And this code to execute (launch) DXSETUP.exe
var
ResultCode: Integer;
// Launch DXSETUP and wait for it to terminate
Exec('DXSETUP.exe', '', '', SW_SHOW, ewWaitUntilTerminated, ResultCode);
I think you need to pack your DirectX files into your installer and extract it to {tmp} directory - or you may run it from CD/DVD (as in example).
See this question for advanced DXSETUP: How to install DirectX redistributable from Inno-setup?
If you need to detect DX version check this: http://www.vincenzo.net/isxkb/index.php?title=DirectX_-_How_to_detect_DirectX_version
You can use a [Tasks] entry to display a checkbox on one of the wizard pages prompting them whether to install/upgrade DX or not (and you can choose whether you want this to be ticked or unticked by default).
For the actual installation, the simplest option is to use a [Run] entry with Tasks: parameter linked to the [Tasks] entry you created; but bear in mind that this will install after your game and you won't be able to catch any errors it might raise. (This is usually not a problem for this sort of thing though.)
The other option is to use the PrepareToInstall event function in [Code]; for this you will need to use ExtractTemporaryFile and Exec. This will install it before your game, and lets you check the exit code to handle errors and reboot requests if need be. See the example script included with Inno for more details, but this is probably more complex than you need for a DX install.
You will also need to decide whether you want to bundle the web-installer or the full-installer for DX. The former is smaller but will require Internet access at install time; the latter will make your installer larger but will not require Internet access. If you are installing from a DVD then the latter is the best option (and you could run it directly from {src} instead of bundling it in [Files] in that case).
Using an NSIS built package, when it gets to the point of writing the files and doing the actual install procedure, the 'Cancel' button is grayed out and can't be used. How can I reactivate this button so users can cancel out of the install during this step?
There is no real support for this, search the nsis forum for workarounds/hacks. You can begin here:
http://forums.winamp.com/forumdisplay.php?forumid=65
Good luck!
Brief explanation given here.
http://nsis.sourceforge.net/InstFiles_Cancel_-_Allowing_a_user_to_cancel_installation_during_InstFiles