Pixel locations

[brm013]

Hi,

I'm currently evaluating your Viewer component and I have a question.

I need to be able to get the mouse coordinates from the viewer relative to the image size. I.e if the image is 800 X 600 and the user zooms in I want to read the cursor position (where the user places the mouse) as being 343, 221 when the MouseMove event tells me the X, Y position is 0, 0. (based on zooming the top left to 343, 221.

Another way to put it is that no matter what zoom the user is at the cursor position should always tell me that the X, Y of a pixel at 343, 221 is 343, 221.

Currently the X, Y in the mousemove event references the topleft(0, 0) and bottomright(Width, Height) of the viewer.

I have also noticed that loading a large image will consume a lot of memory, is there thumbnailing a way of getting better performance/resource management than just loading the whole image?

Thanks
Brett

[brm013]

Actually I just found out how to do it.

GetMouseX() and GetMouseY()

I still would like to know about getting better performance and resource management out of loading a large image

thanks

[Loïc]

Hi,

To decrease the used memory you can try to decrease the InterpolationMode propery value.

Else, you can use the GdPicturePro OCX to extract a thumbnail from the image and to display it into the gdviewer.

Best regards,

Loïc

[brm013]

Is that a quick process to extract a thumbnail? If it is that might be a better solution for me as long as the thumbnail isn't too low res.

Thanks

Brett