Get the path in the wpSelectDir before {app} is set Inno Setup

Question

I would like to get the path of the install directory, when the user clicks on Next, when I\'m in the wpSelectDir of Inno Setup.

I need to chec

Answer 1

Use WizardDirValue support function:

Returns the current contents of the edit control on the Select Destination Location page of the wizard.

Unlike ExpandConstant('{app}'), this function will not fail if called after the wizard is shown but prior to the user selecting a directory. Rather, it will return the default directory name.

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It's more idiomatic than the WizardForm.DirEdit.Text.

Though internally it does nearly the same:

RemoveBackslashUnlessRoot(WizardForm.DirEdit.Text)

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See also How do you find the user-selected install path in Inno Setup?