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Article #16695: Changing the main form of an app. at runtime

 Question and Answer Database

FAQ1695D.txt   Changing the main form of an app. at runtime
Category   :VCL
Platform    :All
Product    :All 32 bit  

Question:
Is it possible to change the main form of an application
dynamically at runtime?

Answer:
It is possible to change the applications main form dynamically at
runtime, but only during the applications start up. To do this, you
will need to choose "View->Project Source" from the IDE's main menu,
and edit the applications initialization code, changing the forms
creation order in response to some condition. Note: You will need
re-edit this code if you add additional forms to the project, as the
IDE's code wizard will not be expecting the changes that you have made
to the main project file, and you may find that the creation code for
the additional forms you have added may have been inserted in an
unexpected position within the code.

begin
  Application.Initialize;
  if SomeCondition then begin
    Application.CreateForm(TForm1, Form1);
    Application.CreateForm(TForm2, Form2);
  end else begin
    Application.CreateForm(TForm2, Form2);
    Application.CreateForm(TForm1, Form1);
  end;
  Application.Run;
end.

7/16/98 4:31:28 PM
 

Last Modified: 01-SEP-99