Hi, I am using InkOverlay object placed on picture control. Its an
activeX control using VB6
I need to do a simple task of deleting part of stroke, that crosses
boundary of control.

Q1 : I observe that strokes which are crossing "right" and "bottom"
boundaries are get clipped automatically. Can you give me document or
link to document which says its a by default behaviour? Or can I get
explaination for it?

Now to delete part of stroke which crosses left, top boundary, I am
using Clip method of InkDisp object.

Problem is with setting a rectangle before passing it to Clip method.
I am using scrollbar on picture control or panel
Due to this, If I use Picture control's Top, Left, Right, Bottom
properties for setting rectangle, It is giving undesirable results.

So I am retrieving coordinates within which ink lies, using
GetBoundingBox Method.
Now I check whether Left or Top values of rectangle are negative.(As I
concerns only with Left and Top boundary) If it is so I set rectangle
with Left and Top values as zero and Bottom and Right values with the
values retrieved using GetBoundingBox method.
And here I called Clip method.
This works fine sometimes, but otherwise ink is get placed at wrong
position.
Now, suppose I called GetBoundingBox method again, I found Left and
Top values are again negative say -50, -50
Actually I am expecting it to be zero, as we have set it to zero in
rectangle that passed to Clip Method.
Q2: Can you tell me why it is happening ?

Now if I set Rectangle as 50, 50, Right + 50, Bottom + 50 and then
call clip method
It works absolutely fine.

Q3: Is there any other approach?

Q4: Also let me know calling Clip method for each stroke on stroke
event is better or Should I call it at the time of saving annotation?

Note: I am calling GetBoundingBox method with default parameter
here is code ---

' Get bounding rectangle
Set boundingRect = stroke.GetBoundingBox
boundingRect.GetRectangle inkTop, inkLeft, inkBottom, inkRight

' Check if stroke crosses Left Top boundaries
If (inkTop < 0) Or (inkLeft < 0) Then
' Convert bottom and Right values to Ink Space coordinates
Overlay.Renderer.PixelToInkSpace pic.hDC, inkBottom, inkRight
' Call Set rectangle
'Rect.SetRectangle 50, 50, inkBottom + 50, inkRight + 50
' Call Clip method
stroke.Clip Rect
End If

Thank you in advance.

On Mar 7, 5:46 pm, "kret" <rahulnparad...******.com> wrote:
> Hi, I am using InkOverlay object placed on picture control. Its an
> activeX control using VB6
> I need to do a simple task of deleting part of stroke, that crosses
> boundary of control.
>
> Q1 : I observe that strokes which are crossing "right" and "bottom"
> boundaries are get clipped automatically. Can you give me document or
> link to document which says its a by default behaviour? Or can I get
> explaination for it?
>
> Now to delete part of stroke which crosses left, top boundary, I am
> usingClipmethod of InkDisp object.
>
> Problem is with setting a rectangle before passing it toClipmethod.
> I am using scrollbar on picture control or panel
> Due to this, If I use Picture control's Top, Left, Right, Bottom
> properties for setting rectangle, It is giving undesirable results.
>
> So I am retrieving coordinates within which ink lies, using
> GetBoundingBox Method.
> Now I check whether Left or Top values of rectangle are negative.(As I
> concerns only with Left and Top boundary) If it is so I set rectangle
> with Left and Top values as zero and Bottom and Right values with the
> values retrieved using GetBoundingBox method.
> And here I calledClipmethod.
> This works fine sometimes, but otherwise ink is get placed at wrong
> position.
> Now, suppose I called GetBoundingBox method again, I found Left and
> Top values are again negative say -50, -50
> Actually I am expecting it to be zero, as we have set it to zero in
> rectangle that passed toClipMethod.
> Q2: Can you tell me why it is happening ?
>
> Now if I set Rectangle as 50, 50, Right + 50, Bottom + 50 and then
> callclipmethod
> It works absolutely fine.
>
> Q3: Is there any other approach?
>
> Q4: Also let me know callingClipmethod for each stroke on stroke
> event is better or Should I call it at the time of saving annotation?
>
> Note: I am calling GetBoundingBox method with default parameter
> here is code ---
>
> ' Get bounding rectangle
> Set boundingRect = stroke.GetBoundingBox
> boundingRect.GetRectangle inkTop, inkLeft, inkBottom, inkRight
>
> ' Check if stroke crosses Left Top boundaries
> If (inkTop < 0) Or (inkLeft < 0) Then
> ' Convert bottom and Right values to Ink Space coordinates
> Overlay.Renderer.PixelToInkSpace pic.hDC, inkBottom, inkRight
> ' Call Set rectangle
> 'Rect.SetRectangle 50, 50, inkBottom + 50, inkRight + 50
> ' CallClipmethod
> stroke.ClipRect
> End If
>
> Thank you in advance.

Hi All,
Any thoughts on above issues. I need them urgently. Your help is much
appreciated.
Thanks and Regards,
kret