Move stack canvas programatically at runtime

hello all
i have built a stack anvas on top of a content canvas which is always visible
I want to create a functionality wherein i can move the stack canvas at runtime
i want to create buttons Eg UP , Down ,Right And Left which could move the stack canvas According to the button i press.
Can any one help me with this ??
When i click the down button(and keep it pressed) the canvas should move down as if i am dragging it down until i release the button
plzz help me with this
mandar

Hello,
Use the Set_Canvas_Property() and Set_View_Property() built-ins.
Francois

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Tab Canvas displaying Stacked Canvas at runtime disappears?

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3) Stacked Canvas -- This is a Stack Canvas with a few
text items on it.
4) Single Window.
======At runtime the following actions occur: ==========
1) The Viewport of the stacked canvas is set to the
Viewport of the Tab Page on the Tab Canvas so that it
looks like the Tab Page has a vertical and horizontal
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2) A text item on the Stacked Canvas is in focus as soon
the as the form window is displayed.
===================Problem is : =====================
1) When I select a Node of the Tree Item, the Tab Canvas
automatically disappears(or becomes invisible) , as a
result the stacked canvas displayed within it at
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=======================================================
PS : I have never experienced this problem with just the
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Thanks
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I am experiencing the exact same thing. The width of the tabs in the layout editor is varied depending on the length of the text. However, at run-time, the width of the tabs is fixed, causing the tabs to be wider than the window and a set of VCR buttons to appear in the upper right corner of the canvas. Personally, I think this is a Forms bug. Why would they intentionally let us set the width to variable at design-time only to force a fixed width at run-time?

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I am using Forms 10g. I have Content canvas named CANVAS1. I created a tab canvas called TAB_CAN contains TAB_PAGE1 and TAB_PAGE2, Stacked Canvas called STACK1.
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Looks like you are in the wrong forum.
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Hello all,
I am become a bit frustrated with what I thought would be a simple form development solution. I am trying to create a form with a stacked canvas that will display about 20 fields that can be scrolled through. This is the detail
Total of 25 fields
5 Fields on the content canvas
20 Fields on the stacked canvas
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Step No. 1
Set the STACKED CANVAS's property VIEWPORT WIDTH AND VIEWPORT HEIGHT
This property determines what viewable width and height of the stacked canvas at runtime.
Set SHOW HORIZONTAL SCROLL BAR or SHOW VERTICAL SCROLL BAR or BOTH as YES so that you can scroll down to view all the items in the CANVAS.
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Stacked canvas is overlapping the content canvas

Hi all,
I am writing a program where I have one content canvas and a button to display the stacked canvas on button click. But when I run the form, 'only' the stacked canvas is showing-up even though I have hidden the stacked canvas in the on-new-form trigger.
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Hi,
Assuming you have two or more datablocks:
On the object navigator, move up (drag-drop) the datablock shown on the main canvas, so it apeears first.
OR
Open the Forms properties and set property: "First navigation data block"
Regards,
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Question about stacked canvas disappearing

Hi,
I have a block which has some database items and non-database items. Since
there are many items in the block, I use a stacked canvas with horizontal bar
to display the less important items.
In the trigger of new-block-instance, show_view('stacked_canvas')
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Imagine each canvas as a piece of paper stacked on a desk. Each piece of paper possibly has a different size and the top left corner of each piece is possible oriented in a different spot. When you say show_view('stacked_canvas') its like reaching to the bottom of the pile and putting that canvas top. When you click on an item not on the stacked canvas that items canvas is placed on top. Your problem is that your non-database item content canvas is covering up the stacked canvas. I think...
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[My Oracle Blog|http://baigsorcl.blogspot.com/]

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hello all,
i am try to show the stacked canvas on content canvas at design . but its not display. i set the following properties.
type-stacked
displayed:true
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yash

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
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5.Now ur stack canvas is placed on ur content canvas.
6.select the stack canvas in same layout editor and click on one of the corner of stack canvas.
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if u hav any problem then ask me.

Stacked canvas background color

How on earth do I get the background color of my stacked canvas to be the same as the rest of my form (the default forms grey color)? I have both my main canvas and stacked canvas on the same visual attribute, all with background & foreground colors set to unspecified (at both the canvas and visual attribute level). No matter what, the background of the stack is white. I've tried setting it at runtime, but the color is slightly different on each machine used. I've tried everything I can think of -- any ideas? Thanks.

Well the problem is that we want the background surrounding our main canvas to be white (that way the tabs up top are white too) and the form itself in the main canvas to be the default grey (that is our standard). Changing the background to gray or some other color in the visual attribute changes both the white background and the default form's grey to that one color, which doesn't really fix the problem at all. If it's left as unspecified, we get the white background and the default forms grey for the background color of the form. The stacked canvas always wants the white.

Have to prevent navigation to another stacked canvas.

Dear all,
I am developing an application using forms 6i with oracle 10g.i have many stacked canvas in this application.where in one particular canvas i have a button namely 'SUBMIT' in which i have a trigger when-button-pressed
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go_block('to_sanct');
declare
g char(1);
begin
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Sorry for such a late reply Hamid.I have tried commenting all code and putting the button only with
null; In such case navigation doesn't occur.then again i tried commenting each set code and i suspect that navigation occurs only in the presence of "COMMIT" statement.
declare
g char(1);
begin
     --     message('value is '||:gd_ind);
/*     if :gd_ind is not null then
     if :gd_ind = 'Y' then
          G:='Y';
     ELSE
          G:='N';
     end if;
     --     MESSAGE('IN');
     --     MESSAGE('TRANS ID'||:c_trans);
     --     MESSAGE('head '||:c_head);
          --MESSAGE('gd value '||G);
Leave_application.grant_or_deny_leave(:c_trans,:c_head,G);*/
COMMIT;
/*   -- MESSAGE('OUT');
     --     MESSAGE('TRANS ID'||:c_trans);
     --     MESSAGE('head '||:c_head);
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--end if;*/
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Hello
Why if i had used an inherited stacked canvas and tried 2 change the height and width of it ...
it doesn't change it remains with the same size,can any body answer me why it behaves like this...!?
Thanks in advance,
Regards,
Abdetu...

Abdetu,
am getting a compilation error says: identifier 'viewport_width' Must Be Declared I must apologize, I misread the Forms Help which lists "VIEWPORT HEIGHT" and "VIEWPORT WIDTH". What I failed to recognize was that there was no underscore "_" between the words. Therefore, these are Properties of the stacked canvas that can only be set through the property palette - not the SET_VIEW_PROPERTY built-in. Sorry! :8}
1. You have a Stacked Canvas that has a property class assigned to it or you subclassed the canvas into your form when you copied it from another form (like a template form).what is the difference i would like to know ?
>
The difference is where the source of the referenced propertes (property class) exist. For example, if you subclass the property class from a source Form (such as a template.fmb or an Object Library.olb) then the set of properties are dependent on the source object (.fmb or .olb) and you have to ensure the source object is in the FORMS_PATH. If you manually create the property class in the form there is no dependency on other objects. For the record, it is "Best Practice" to subclass Property Classes from a common source so you can standardize and reuse common sets of properties (as well as other shared objects).
Vertically half of The content of the canvas wasn't seen the other half was blank gray ...!!! e.g. can't scroll horizontally to see the rest of it...!!! So it is cutting off some of the items on the stacked canvas? For example:
Stacked canvas when viewed in Layout Editor
|---------------------------------------|
| Item 1[              ]                |
| Item 2[              ]                |
| Item 3[              ]                |
| Item 4[              ]                |
|---------------------------------------|
Stacked canvas when viewed during runtime
|---------------------------------------|
| Item 3[              ]                |
| Item 4[              ]                |
|                                       |
|                                       |
|---------------------------------------|Have you tried to copy the stacked canvas instead of subclass it just to what happens?
Craig...

Problem with generating stacked canvas in Designer 6i

When I try to generate a master detail form, in which the detail block is placed on a 'new stacked canvas' the form is generated as expected: master- and detailblock are both created, but when running the form
the detail block is somehow made invisible. I don't understand!!!
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Hope to hear from you!
Alex

Hello,
When you put a block on a "new stacked canvas" that canvas is generated as a popup canvas. If that popup overlaps with some other generated items (for instance: items in master block) Forms will not show it.
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Dalibor
P.S. Why do you have to put detail block on a popup canvas? Why don't you simply put it on a "same content canvas"?

How to create stacked canvas

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once you build a content canvass your next step is to create another canvass with a property canvas type of stacked. those two canvas the content and stacked should have the same property of raise on entry yes and should be on the sane window.
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I have Mater and Details Block , and I have two canvas content canvas and a stacked canvas, and the a stacked canvas on top of content canvas , and I have set the horizontal and vertical scroll bar for the stacked canvas , my problem is that when I inquire and click on the details block which is on stacked canvas the header content canvas is moved up
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Hello.
It's still not working.
And i'm not hidding first canvas.
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Move stack canvas programatically at runtime

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