Allowing the User to Specify Devices and Files

You can associate a device or file with an existing MCIWnd window by using the MCIWndOpenDialog1ZI4_N4, MCIWndOpenF.J2CX, and MCIWndOpenInterface3GYV34 macros, and the GetOpenFileNamePreview11PBIP9 function.

To let a user of your application select a file to play, use MCIWndOpenDialog. This macro displays the Open dialog box (shown following) for choosing a file and associates the selected file with the current MCIWnd window.

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You can let a user of your application select a file to associate with an MCIWnd window and preview that file by using GetOpenFileNamePreview11PBIP9 and MCIWndOpenF.J2CX. The GetOpenFileNamePreview function displays the Open dialog box for choosing a file and lets the user preview (play) its contents. When the name of an existing file is specified in the dialog box, GetOpenFileNamePreview provides a small control to let the user preview the contents of the file. You can associate a specified file, selected with GetOpenFileNamePreview or specified in another manner, with an MCIWnd window by using MCIWndOpen.

You can also use MCIWndOpen to specify a device to associate with an MCIWnd window. For example, you can use a device name, such as  CDAudio .

To associate an MCIWnd window with a file interface or data-stream interface to multimedia data, use the MCIWndOpenInterface3GYV34 macro. For more information about file and data-stream interfaces, see AVIFile Functions and MacrosMYH0GP.

Note  Before associating a new file or device with an MCIWnd window, MCIWndOpenDialog1ZI4_N4 and MCIWndOpenF.J2CX close any device currently associated with the window. Your application does not need to close any open devices before using these macros.