Stacked canvas in content canvas desapears when post_query

Hello.
I have a content canvas and i draw a stacked canvas into content canvas. I want a horizontal scroll in stacked and a vertical scroll bar in the content. In stacked canvas, i placed a base table data block. In when-form-instance, i have a comand SHOW_VIEW of stacked canvas.When i execute_query, the stacked canvas desapears. I don't understand why...
This is Developer 10g
Please help me.
Best Regards

I have seen that too, with tab canvas, which is like a stacked canvas.
On mine, it occurs after a clear_form and synchronize, but before I execute any queries (there are multiple blocks and queries).
So what I added was this, following the Synchronize:
Declare
Tab_View_id Viewport := Find_View('TAB');
Begin
if get_view_property(Tab_View_id,Visible) = 'FALSE' then
show_view(Tab_View_id);
end if;
End;I actually put the Tab_View_ID variable into a package spec, so Forms only needs to set it once.
If you can't find the right place to add the code, a form-level when-new-item-instance trigger will work.

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Display stacked canvas on content canvas?

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Hi,
1.Create one content canvas and create one stacked canvas.
2.give the label as Conetnt canvas and stack canvas respectively.
3.Go to conetent canvas layout editor
4.click on menu view-->Stacked Views and select ur stack canvas.
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(another) stacked canvas on content canvas problem

I've searched the forums for the last 2+ hours and can't find a solution for my problem, although there are hundreds of questions on this subject.
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user12198246 wrote:
I've searched the forums for the last 2+ hours and can't find a solution for my problem, although there are hundreds of questions on this subject.
I have a stacked canvas on top of a content canvas. The canvases share the same window. They also share a data block. I added radio buttons on the main canvas to "show/hide" the stacked (my ultimate goal is to have 2-3 stacked and toggle. When hide, the stacked canvas is hidden, but when i click show, it is not. I understand reading all the posts that the block with focus will display, and I've added both a go_block and go_item prior to the show_view. Below is my code. MEL_DETAILS is content and MEL_LINE_ITEM is stacked.
IF :stack = 'SHOW_STACK' THEN
GO_BLOCK('MEL_ITEM');
GO_ITEM('MEL_ITEM.MIS_PROJECT_NO');
SHOW_VIEW('MEL_LINE_ITEM');
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_true);
SET_VIEW_PROPERTY('MEL_LINE_ITEM', display_position, 718, 583);
SET_ITEM_PROPERTY('PROJECTS.STACK',MOUSE_NAVIGATE,PROPERTY_FALSE); -- radio button
ELSif :stack = 'HIDE_STACK' THEN
HIDE_VIEW('MEL_LINE_ITEM');
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_false);
SET_ITEM_PROPERTY('PROJECTS.STACK',MOUSE_NAVIGATE,PROPERTY_TRUE);
END IF;Here, it seems two problem..
The line..
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_true);
and
SET_VIEW_PROPERTY('MEL_LINE_ITEM', visible, property_false);No needed
Hope this helps
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when i run the form, i can see only the header part on carvas4.
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Am I correct in saying you want the tab canvas to act like a stacked canvas.
If so have you added it to the view of Canvas4 by performing the following:
1. View (drop down)--> Stacked Views
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Displaying tab page canvas on content canvas in Forms 6i

Forms [32 Bit] Version 6.0.8.8.0 (Production)
I have an existing form which has multiple canvases and there are couple of fields on Content canvas and then on the same content a Tab canvas is layed out. I can see both canvases in same layout editor and select and move the tab canvas.
But when I create a new form and want to layout a tab canvas on top of content, it appears in a separate layout editor window on design time.
I want it like below:
-----------content--------------------
|                                       |
|                                       |
|                                       |
|TabPag1     TabPage2                   |
|                                       |
|                                       |
|                                       |
|                                       |
|                                       |
|                                       |
-------------content------------------How can I create it so that it appears in same layout editor window at design time and appears in same window like one canvas on runtime.

In order for the Tabbed Canvas to appear on the Content Canvas in the Layout Editor, you have to actually draw the Tabbed Canvas on the Content Canvas; eg: open your content canvas in the layout editor, click on the tabbed canvas toolbar button and then draw it on your content canvas. If you create the Tabbed Canvas object through the Object Navigator and then set the properties so it would display on the content canvas - it won't be visible on the content canvas with the layout editor.
This is a bit of a quirk in the Forms Builder and they haven't corrected this in any of the newer versions of Forms yet. :-(
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If someone's response is helpful or correct, please mark it accordingly.

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{quotei create a two data block's with same table.
one data block for content canvas and one for stacked canvas.{quote}
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Looks like you are in the wrong forum.
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Hi Andreas Wieden,
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Stacked canvas in content canvas desapears when post_query

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