Thanks for your reply, Richard.
Hmm, can you tell me how to use AppSearch to "locate folders"?
"Use type 19 CA to set properties" - I guess you mean I'll need a dll or exe to
detect and set the property, right? If so, is it possible that I can "reuse" my
existing setting upgrade program? I already have a small program to handle
setting upgrade - it accepts parameters to run like this "upgrade_settings.exe
-run param1 param2". Can I run it something like "upgrade_settings.exe -detect
param1 param2" just for detection reason? How can I make sure this detection
run is before the actual setting upgrade running? I've a feeling that, for one
program, we'd better not to run it twice in one installer. Or, even I can write
another program to do the detection work, but how can I sequence these two apps
to make the detection one run first? Maybe I'm wrong, but I worry about the
program sequencing. Currently, I have these code:
<Binary Id="SettingUpgraderApp" SourceFile="upgrade_settings.exe"/>
<CustomAction Id="DoSettingUpgrade"
BinaryKey="SettingUpgraderApp"
ExeCommand='-run param1 param2'
Execute="deferred"
Return="check"
HideTarget="no"
Impersonate="no" />
<InstallExecuteSequence>
<Custom Action="DoSettingUpgrade" Before="InstallFinalize">NOT
Installed</Custom>
</InstallExecuteSequence>
If, say, add the detection, can I do this?
<CustomAction Id="SettingUpgradeDetection"
BinaryKey="SettingUpgraderApp"
ExeCommand='-detect param1 param2'
Execute="deferred"
Return="check"
HideTarget="no"
Impersonate="no" />
<InstallExecuteSequence>
<Custom Action="SettingUpgradeDetection"
Before="DoSettingUpgrade">NOT Installed and REALLY_NEED_UPGRADE_SETTING</Custom>
</InstallExecuteSequence>
And the last question, "to use condition on events to determine dialogs shown
in a wizard", is it some like this?
<Publish Dialog="MyDlg" Control="Back" Event="NewDialog"
Value="MyInstallDirDlg" Order="1">NOT Installed and and
REALLY_NEED_UPGRADE_SETTING</Publish>
Thanks!
________________________________
From: Richard <legal...@xmission.com>
To: wix-users@lists.sourceforge.net
Sent: Monday, October 19, 2009 6:52:11 PM
Subject: Re: [WiX-users] How to detect files presence and conditionally show a
new added dialog page
Use AppSearch to locate folders.
Use type 19 CA's (property set) to set properties based on conditions
Use conditions on events to determine dialogs shown in a wizard
sequence, or a condition on the dialog action in the UI sequence to
conditionally display dialogs.
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