Hi folks -- I cannot tell you how frustrated I am that I apparently *still* don't fully understand communication between classes/forms! I won't share all my code with you, but let me tell you what I was trying to do & hopefully one of you can explain to me what's going on so I can understand, once and for all. The basic problem is to create a class which will take care of saving values at shutdown and loading them at startup, i.e., a config file. [I understand iniFiles and regIniFiles; that is not the issue.]
For the sake of argument, suppose I wanted to store values related to the main form, a component on the form, and a class property. I think that takes care of most possibilities :-) I am apparently confused and clueless regarding issues like what parameters I need to have in the IniClass's method signatures, whether they are sent by reference or by value (even though I thought I understood that, thanks to you folks), and even where it's best to instantiate IniClass instances (I don't fully understand why I can save and retrieve Form1 values when I instantiate the IniClass in the initialization section of Form1...How can you set Form1's Top, Height, etc. before Form1 has been created?). At first I tried initiating an instance of the IniClass in the Form1 OnCreate event, passing a reference to Form1 itself to the IniClass--thinking that would allow me to pass not only properties from Form1 but also therefore Form1's components, or at least Form1 public properties that I created to hold class level variables. Form1's properties are properly set, but Form1 component properties and variables aren't passed: type TIniClass=class(TObject) private public procedure readConfig (var Form1:TForm); procedure write Config (var Form1:TForm); end; procedure Form1.OnCreate ... ini:=TIni.Create; ini.readConfig(Form1); ini.Free; I sort of understand why component properties would be inaccessible, but I don't understand why the class properties wouldn't be accessible. Thank you, in advance, for the insight that will help lower my blood pressure :-) Al C. _______________________________________________ Delphi mailing list -> [email protected] http://www.elists.org/mailman/listinfo/delphi
