Common dialogs are a set of predefined, standard dialogs that can be used in an application to carry out common tasks such as file selection, font selection, or colour selection. All the common dialog classes are derived from a common base class, CCommonDialog.

The behaviour and appearance of a common dialogue by set or altered by changing the parameters supplied to the dialog's constructor or by setting various flags. All the common dialogs require the inclusion of the commdlg.h header file.

MFC CCommonDialog Classes are shown in the following table.

Class	Purpose
CColorDialog	Allows the user to select or create a color
CFileDialog	Allows the user to open or save a file
CFindReplaceDialog	Allows the user to substitute one string for another
CFontDialog	Allows the user to select a font from a list of available fonts
COleDialog	Useful for inserting OLE objects
CPageSetupDialog	Allows the user to set page measurement parameters
CPrintDialog	Allows the user to set up the printer and print a document
CPrintDialogEx	Printing and Print Preview for Windows 2000

For further detailed reading
https://docs.microsoft.com/en-us/cpp/mfc/reference/ccommondialog-class?view=vs-2019

Example

The following short program illustrates the use of the CColourDialog by changing the background colour of the windows to match that selected from the colour dialog box

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Last Updated: 15 September 2022