Inno Setup - Opening directory browse dialog from

问题:

I am using this code: Inno Setup - How to create a custom form that allows me to locate the files to decompress?. How to open directory browse dialog from another dialog without hiding it?

回答1:

The dialog opened by BrowseForFolder function is unfortunately implemented to have the WizardForm as an owner window. That effectively moves all other opened dialogs behind the WizardForm, while the "browse" dialog is showing (note that the dialogs are not hidden, they are just obscured by the WizardForm).

---

What you can do:

• Re-implement BrowseForFolder from scratch. That's a huge task.
• You can use CreateInputDirPage instead of your solution, what I have suggested you at the very beginning.
  For an example, see Inno Setup How to show network on a browse dialog?
  Though I must admit, that now that I understand, that you need to allow different files in different folders, this is maybe not the best solution anymore.

• As a workaround, you can abuse a different browse dialog implementation by the TInputDirWizardPage, that does not suffer the problem of the BrowseForFolder:

  var
    FakePage: TInputDirWizardPage;
  
  procedure BrowseForFolderEx(var Directory: String);
  begin
    FakePage.Values[0] := Directory;
    FakePage.Buttons[0].OnClick(FakePage.Buttons[0]);
    Directory := FakePage.Values[0];
  end;
  
  procedure InitializeWizard();
  begin
    FakePage :=
      CreateInputDirPage(wpWelcome, '', '', '', False, SetupMessage(msgButtonNewFolder));
    FakePage.Add('');
  end;
  
  function ShouldSkipPage(PageID: Integer): Boolean;
  begin
    Result := (PageID = FakePage.ID);
  end;
  

  Use BrowseForFolderEx instead of BrowseForFolder.

  procedure SelectFileBrowseButtonClick(Sender: TObject);
  var
    Dir: string;
  begin
    Dir := GetSelectFilePath;
    BrowseForFolderEx(Dir);
    SelectFilePathEdit.Text := AddBackslash(Dir);
  end;