Dialog and Message routines

DELPHI RTL Reference

CreateMessageDialog function
Returns a specified message dialog, does not display the dialog form.

InputBox function
Brings up an input dialog box ready for the user to enter a string in its edit box.

InputQuery function
Brings up an input dialog box ready for the user to enter a string in its edit box or to cancel the input.

PromptForFileName function
Displays an open or save dialog, enabling the user to select or specify a file name.

SelectDirectory function
Brings up a dialog box ready for the user to select a directory name.

ShowMessage procedure
Displays a message in a dialog box, waits for the user to click an OK button.

ShowMessageFmt procedure
Displays formated message in a dialog box, waits for the user to click an OK button.

more to come...