Question on Automated Annotation.

I would like to ask 2 questions about drawing the automated annoation.

1. Is there any "Eraser" tool in the automated annotation toolbar to erase the drawing ? if no, how can i have this function?

2. Currently, we have to drag a "starting point" and then follow by a "ending point" in order to draw the text on the image by using the automated annotation toolbar. Is it possible to draw the text by only one single click?

1. The concept of 'erasing' does not apply to annotations. The annotation objects are not paint drawings. They are individual objects that can either be removed completely or kept intact. You cannot 'erase' part of an object.

2. Yes, you can change the behavior of default annotation object creation designer. Which LEADTOOLS version (13, 14, 15, 16, etc.) and programming interface (DLL API, .NET classes, COM objects, VCL, C++ Classes, Main OCX, etc.) are you using?

I am using ver15, please advice on the point 2. Thanks

For point 1, is there any "erase" tool to erase part of the image itself ? (not annotation)

(1) If you mean by erasing, filling part of the image with some background color (such as white), you can do that by defining a region and calling the fill function.

(2) You did not specify which programming interface (DLL API, .NET classes, COM Interop, C++ Classes, etc.) you are using.

Thanks,
Maen Badwan
LEADTOOLS Technical Support

I am using the COM Interop for capturing video and using .Net classess for image manipulation

If you want to create an Annotation Text object by a single click, you might be able to do this by handling the Click event. You need to check if the selected object is Text object, create the text object programmatically using the (X, y) coordinates of the mouse click. If you are using LEADTOOLS .Net programming interface, you can create an Annotation text object by using the following code:
+-------------+
Dim text As AnnTextObject = New AnnTextObject()
text.Pen = New AnnPen(Color.Red, New AnnLength(3))
text.Text = textString
text.Brush = Nothing
text.Font = New AnnFont("Arial", New AnnLength(10, AnnUnit.Point), FontStyle.Regular)
text.EdgeMargin = AnnLength.Empty
text.Alignment = StringAlignment.Center
text.LineAlignment = StringAlignment.Center
text.TextRotate = AnnTextRotate.Rotate0
text.Bounds = New AnnRectangle(e.X, e.Y, 100, 100, AnnUnit.Pixel)
container.Objects.Add(text)
+-------------+

Thanks,
Maen Badwan
LEADTOOLS Technical Support

do you mean we cannot have the single simply from the AutomatedAnnotation toolbar?

You can put this code anywhere you want, and it will create the AnnTextObject for you.

Thanks,
Maen Badwan
LEADTOOLS Technical Support

Sorry, i can't understand it actually.
Currently, use click the Text Annoation Object from the annotation toolbar (which is created by CreateDefaultToolBars). How can i create a single click Text Annotation if it used the default toolbar ?

my second question is..the default property of the Text Object is the "Name" property of the Text when user clicks the "Text Propeties" in the context menu. Can I change it to the "Text" property ?

I think what you're trying to do is this:
- The user will click on a button on the toolbar
- This will immediately insert a text annotation object on the image
Is this correct? If yes, you can take the code I gave you earlier in this thread and put it in the event handler of the toolbar button.
If you try this and it doesn't work, please put your code in a small test project (not your full application) and send it to us in a ZIP or RAR file and we will check it for you.

If this is not what you need, please explain it in more details.

About the second question, it is not directly related to this thread, so please create a new forum thread or send it in a new ticket to support@leadtools.com

Thanks,
Maen Badwan
LEADTOOLS Technical Support

Partially correct for
- The user will click on a button on the toolbar
- This will immediately insert a text annotation object on the image

I also want to add/change the text of AnnTextObject by single click and then directly edit/add the text directly on the TextObject (no need to do it via the Object Dialog )

Double clicking a text object will automatically allow you to edit the text of the AnnTextObject without showing the object's dialog. Is this what you want?

You can edit the AnnTextObject without showing the object's dialog by Double clicking the object. Did you try this?
If you mean that you want to do this by a single click, there is no direct way to do this because this is by design.

Thanks,
Maen Badwan
LEADTOOLS Technical Support

I found that my version of LT does not support "Edditing the AnnTextObject by Double clicking the object". After upgrading to the latest patch, it is okay now.

I tried to input multiline in the Text Object by "Ctrl + Enter" or "Alt+Etner" but it failed. It only support multi-line in the dailog..

About the multi-line question, this question is not directly related to the original issue. Can you please open a new forum post for this new issue?

Thanks,
Maen Badwan
LEADTOOLS Technical Support