The second line of this procedure loads a picture into a TImage on this child form. The third line should do the same on the parent form, but doesn't. Why, and what is the best fix ? FilePath is a String.
procedure TForm1.FileListBox1Click(Sender: TObject);
FilePath := FileListBox1.FileName;
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This article explains how to create forms/units independent of other forms/units object names in a delphi project.
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