>>>Wang Imaging task can be done with his own OCX, you can do your own form only instantianing once and using these controls, Well except you haven't VFP.
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>>Yes I have VFp, but I do not want to build in a image viewer OCX Form if possible. As we have many here who have there own religious choice of image viewers (myriad, wang, kodak, ImageR, etc..) What I wanted is a way of detecting that the imager is up and just telling it to open the drawing and not open another copy of the image viewer with the drawing. We wanted to give our app some flexibility on image viewer, but this is a by product of the choice we made.
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>Oh, I understand you, but this will be hard, I think not all the Image viewers are DDE enabled, and have different ways of opening the images. For knowing if it's up George's Tasker ISRUN32, will do.

Lets suppose that if I detect that the viewer that is in use is say the wang image viewer or the kodak viewer. Can you tell me what calls I would make in order to have it open a drawing using the existing exe that is running. Or is there any calls I could have made ahead of time that would have given me this ability.