int = GetOpenFileName(OPENFILENAME)
Creates an Open dialog box that lets the user specify the drive, directory, and the name of a file or set of files to open.
Parameters
OPENFILENAME : string/bytes
A string packed into an OPENFILENAME structure, probably via the struct module.Comments
The win32gui::GetOpenFileNameW function is far more convenient to use.
Return Value
If the user presses OK, the function returns TRUE. Otherwise, use CommDlgExtendedError for error details
(ie, a win32gui.error is raised). If the user cancels the dialog, the winerror attribute of the exception will be zero.