dinu4u4ever wrote:i added a help button in a dialog box... on clicking the button how can i open an external .HLP file or a PDF?
That would depend entirely on what Java library you are using to access your help or PDF files (several are available).
If you are looking for code that does this, try Googling "Java PDF Library" or "Java Help Library".
Note that this forum is for questions about SWT Designer. General Java or Eclipse questions should be directed to the appropriate Java or Eclipse newsgroup.