Drag and drop in windowed application

i have created application using drag and drop funcatinalities .it's working in webbrowser as internet application .but i converted int o a windowed application and dra and drop isn't working in that form as desktop app.
pls help me
thank you.

Maybe I should mention that this drag and drop feature doesn't work on ALL the programs, which leads me to believe that this is a system preferences problem. I can't drag into any of the Adobe programs, iPhoto, Kodak Easyshare, etc.
I understand the Get Info solution, but that is pinpointing only one type of file... I would like to fix this feature for all files.
Thanking in advance, Ck

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