how to use inputdlg with out freezing a figure.

I have an image and I am showing it using imshow.

    I = imread('myImage.jpg');
    figure
    imshow(I)

now I want to read some values in image using data cursor and use inputdlg to read values. if I do this after the above code:

   answer = inputdlg({'give value'}, 'read image', 1 ,);

I cannot get focus on my figure without closing input dialog. The input dialog stays on the top. Right now I can use figure cursor only after closing my input dialog. Is there any way to get access to data cursor of the imshow before I give input in my input dialog.