Will you please give me a little direction?Thans .

Hello everyone:
Thank you for focusing on my question!
I want my programm to accomplish this funtion:It can gets all the filenames of files opened by application(Word¡¢Excel¡¢notpad¡¢Protel etc.) at that time when my programmn runs. For example,Perhaps application had opened "test1.doc" and "test2.xls" and "test3.txt" and "test4.ddb" at that time, How can I get these filenames("test1.doc" ¡¢"test2.xls"¡¢"test3.txt"¡¢"test4.ddb") through
my programm? Is it really impossible? Somebody telles me to use API functiones and also telles to send message to Operation System,but which API function should I use? which message should I send to Operatio Sysetm. What shall I do on earth? Will you please give me little help and direction? I really haven't any idea! Thank you very much ! Thank you! Thank you!

ZhiDong OuYang
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