BasicWPF¶

Purpose¶

This sample program demonstrates how to:

Load an image file from the disk into an EImage object.
```
image.Load(...);
```
Attach (associate) an ROI to the image.

The ROI gives access to the selected part of the image content.

```c++
roi.Attach(image);
```

Position and size the attached ROI on the image.

roi.SetPlacement(orgX, orgY, width, height);

Draw the image in a graphical device context.
```
image.Draw(drawAdapter);
```
Draw the frame (the external rectangle) of the ROI in a graphical device context.

The second parameter enables the handles to manually manipulate the ROI position and size.

```c++
roi.DrawFrame(context, true);
```

Retrieve the cursor coordinates after clicking.
```
handle = roi.HitTest(x, y);
```
Move the handle to its new retrieved position and modify the ROI accordingly.
```
roi.Drag(handle, x, y);
```