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Diffstat (limited to 'Lessons_uncategorized/Lesson_Varstore_5/README.md')
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diff --git a/Lessons_uncategorized/Lesson_Varstore_5/README.md b/Lessons_uncategorized/Lesson_Varstore_5/README.md index f3c9f23..5892635 100644 --- a/Lessons_uncategorized/Lesson_Varstore_5/README.md +++ b/Lessons_uncategorized/Lesson_Varstore_5/README.md @@ -444,3 +444,28 @@ Callback: Action=EFI_BROWSER_ACTION_FORM_CLOSE, QuestionId=0x0001, Type=EFI_IFR_ I hope all of these experiments have got you some understanding about when and how the `Callback()` function is executed. +To finish this lesson here is a logic diagram for an individual numeric element with the current value of 8: +``` + Open form (even before the form is displayed) +EFI_BROWSER_ACTION_FORM_OPEN (Value=0) +EFI_BROWSER_ACTION_RETRIEVE (Value=8) + | + ------------------------------------------------- + | | + Change value from 8 to 8 Close form +EFI_BROWSER_ACTION_CHANGING (Value=8) EFI_BROWSER_ACTION_FORM_CLOSE (Value=8) + | + ------------------------------------------------- + | | + Change value from 8 to 9 Close form +EFI_BROWSER_ACTION_CHANGING (Value=9) EFI_BROWSER_ACTION_FORM_CLOSE (Value=8) +EFI_BROWSER_ACTION_CHANGED (Value=9) + | + ------------------------------------------------------------------------------------------------- + | | | + Submit Close form with sumbit Close form without submit +EFI_BROWSER_ACTION_SUBMITTED (Value=9) EFI_BROWSER_ACTION_SUBMITTED (Value=9) EFI_BROWSER_ACTION_CHANGED (Value=8) + | EFI_BROWSER_ACTION_FORM_CLOSE (Value=9) EFI_BROWSER_ACTION_FORM_CLOSE (Value=8) + Close +EFI_BROWSER_ACTION_FORM_CLOSE (Value=9) +``` |