Show_view

Hello
i have 3 content canvases 'MAIN_TAB_CANVAS' & 'TABS_CANVAS' on MAIN_WINDOW
and 1 canvas 'SURVEY' on window1
when calling the 'SURVEY' canvas it displays successfully but on hiding it ...
and showing the 2 canvas 'MAIN_TAB_CANVAS' & 'TABS_CANVAS' it crushes
b u t if i put the pause an Acknowlege msg pop up & says Acknowlege and displays everything correctly
hide_view('SURVEY'); -- canvas 2
show_view('MAIN_TAB_CANVAS');
go_block('PJ_PROJECTS');
GO_ITEM ('PJ_PROJECTS.PROJECT_ID');
PAUSE;
show_view('TABS_CANVAS');
go_block('PJ_CR_OLD_ITEMS');
GO_ITEM ('PJ_CR_OLD_ITEMS.ITEM_NUMBER');pls help me
Regards,
Abdetu...
Edited by: Abdetu on Dec 14, 2010 8:03 AM

One common problem I see in Forms coding is that too many times developers rely on implicit behavior and refuse to add the actual code required to perform some task. Another common problem is backward logic. Regardless of what does or does not work, it only makes sense to code logically. This is a good example. Knowing that Forms relies almost exclusively on cursor positioning in order to execute tasks, doesn't it make sense that the form must always have a place to locate the cursor?
Notice in your code how you first HIDE the current view before showing the next. Consider what must happen internally when done this way... If the cursor is currently on your "Survey" canvas and you decide to close it, the cursor becomes abandoned. This forces the Forms internal processing to now have to waste time trying to determine where to safely move the cursor. Often, this becomes problematic, as you seem to have now noticed. The safe and logical way of closing and opening a canvas is to consider the cursor at all times. So, I would argue that the preferred way of moving from canvas to canvas while hiding one would be something like this:
show_view('MAIN_TAB_CANVAS'); -- First, display the target
GO_ITEM ('PJ_PROJECTS.PROJECT_ID'); - Move the cursor to the target location
hide_view('SURVEY'); -- Hide the original canvas
SYNCHRONIZE; -- optional as neededThe behavioral appearance may change slightly as a result, but once tweaked properly, the application should likely perform in a more stable manner.
Having said that, you may be hitting a bug. Be sure that you are using the latest patched release. The latest supported releases are:
10g Release 2 - 10.1.2.3
11g Release 1 - 11.1.1.3

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the screen (overlap) you cannot show the one that
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null

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[email protected]

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