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To use this technique for forms, use option "_24" instead.
It's not nearly as useful with forms as it is with reports, however, because in older versions of Access you can open hidden forms but not hidden reports. Any time you turn off the screen display, you absolutely must include an error handler in your routine that will immediately reenable screen updates if an error occurs.
If the handle is 0, Windows reenables screen updates to the locked window.
Because the only window you care about locking in Access is the main Access window itself, the In Access 2.0, finding the window handle (the unique integer that identifies every window) for the main Access window was difficult.
Without the checkbox set, you will see the reports open and minimize, in design view. Echo method is simple to use, but many developers miss it, allowing their applications to appear somewhat dizzying as objects appear and disappear from the screen.
The acb Show Updates method really doesn't do much besides what a direct call to Application.
In that case, you may want to try an alternate technique, calling the parallel .This function takes as its only parameter a window handle.If that handle is nonzero, Windows simply stops updating the contents of that window on screen. By passing this method a True or a False value, you can indicate whether you want to display updating within the main Access window.
The form includes a checkbox that allows you to run the test with screen updates enabled or disabled.
For example, depending on how you open forms and reports in design mode, completely hiding the properties sheet may be difficult.