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MDI Applications. Single Document Interface Multiple Document Interface. MDI Applications. Single Document Interface Application has only one window. Even multiple windows are present in the application, all windows act independently. User may think each window is a different application.

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mdi applications

MDI Applications

Single Document Interface

Multiple Document Interface

PowerBuilder Online Courses - by Prasad Bodepudi

mdi applications1
MDI Applications
  • Single Document Interface
    • Application has only one window.
    • Even multiple windows are present in the application, all windows act independently.
    • User may think each window is a different application.
    • Early interface of MS-Windows

PowerBuilder Online Courses

mdi applications2

MDI Applications

Single Document Interface

Multiple Document Interface

PowerBuilder Online Courses - by Prasad Bodepudi

mdi applications3
MDI Applications
  • Multiple Document Interface
    • Application has one window of type MDI frame or MDI frame with Microhelp.
    • All other windows are opened as sheets in the parent window.
    • When a sheet is minimized, sheet’s icon is displayed at the bottom of the MDI window.
    • Cont...

PowerBuilder Online Courses

mdi applications4
MDI Applications
  • Multiple Document Interface (Cont…)
    • When MDI window is minimized, it’s icon is displayed either at the bottom of the Program Manager or on the task bar depending on the operating system.
    • Closing MDI window will close all sheets.
    • Sheets can’t go outside the MDI window.
    • Sheets can be arrange in wide varieties.
    • Cont...

PowerBuilder Online Courses

mdi applications5
MDI Applications
  • Multiple Document Interface (Cont…)
    • Windows are opened as sheets using OpenSheet() or OpenSheetWithParm() functions.
    • Opened sheets are listed under one of the menu bar item depending on the argument specified to the above functions.
    • Cont...

PowerBuilder Online Courses

mdi applications6
MDI Applications
  • Multiple Document Interface (Cont…)
    • Calling GetActiveSheet() from the menu returns reference to the currently active sheet.
    • GetNextSheet() returns the reference to the next sheet (order is determined from the list of opened sheets)

PowerBuilder Online Courses

mdi applications7

MDI Applications

Single Document Interface

Multiple Document Interface

Questions/Comments? Drop an e-mail at prasad@applied-software.com

The End

PowerBuilder Online Courses - by Prasad Bodepudi