Other Window Styles for Dialogs

Suppresses WM_ENTERIDLE messages that the system sends to the owner of a dialog box while the dialog box is displayed.

This style is obsolete and is included for compatibility with 16-bit versions of Windows. If you specify this style, the system creates the dialog box with the WS_EX_TOPMOST style.

This style does not prevent the user from accessing other windows on the desktop. Do not combine with the DS_CONTROL style.

Centers the dialog box in the working area of the end user’s screen.

Causes the dialog box to use the SYSTEM_FIXED_FONT instead of the default SYSTEM_FONT. This is a monospaced font compatible with the System font in 16-bit versions of Windows operating systems earlier than 3.0.

Indicates that the header of the dialog box template contains additional data specifying the font to use for text in the client area and controls of the dialog box. The font data begins on the WORD boundary that follows the title array. It specifies a 16-bit point size value and a Unicode font name string.

If this style is not specified, the dialog box template does not include the font data.

Displays a question mark in the title bar of the dialog box. When the end user clicks the question mark, the cursor changes to a question mark with a pointer. If the end user then clicks a control in the dialog box, the control receives a WM_HELP message. The control should pass the message to the dialog box procedure. The help application displays a pop-up window that typically contains help for the control.

DS_CONTEXTHELP is only a placeholder. When the dialog box is created, the system checks for DS_CONTEXTHELP and—if it is there—adds WS_EX_CONTEXTHELP to the extended style of the dialog box. WS_EX_CONTEXTHELP cannot be used with the WS_MAXIMIZEBOX or WS_MINIMIZEBOX styles.

Creates the dialog box even if errors occur—for example, if a child window cannot be created or if the system cannot create a special data segment for an edit control.