Button

Style

Effect

Tool window

WS_EX_TOOLWINDOW

A tool window has a title bar that is shorter than a normal title bar, and the window title is drawn using a smaller font. A tool window does not appear in the task bar or in the window that appears when the user presses ALT+TAB.

Accept files

WS_EX_ACCEPTFILES

Specifies that a window created with this style accepts drag-and-drop files.

Clip siblings

WS_CLIPSIBLINGS

Clips child windows relative to each other ; that is, when a particular child window receives a paint message, the WS_CLIPSIBLINGS style clips all other overlapped child windows out of the region of the child window to be updated. (If WS_CLIPSIBLINGS is not given and child windows overlap, when you draw within the client area of a child window, it is possible to draw within the client area of a neighboring child window.) For use with the WS_CHILD style only.

Transparent

WS_EX_TRANSPARENT

Specifies that a window created with this style is to be transparent. That is, any windows that are beneath the window are not obscured by the window. A window created with this style receives WM_PAINT messages only after all sibling windows beneath it have been updated.

Center mouse

DS_CENTERMOUSE

Centers the mouse cursor in the dialog box.

Set foreground

DS_SETFOREGROUND

This style brings the dialog box to the foreground. Internally, Windows calls the SetForegroundWindow function for the dialog box.

Control

DS_CONTROL

Creates a dialog box that works well as a child window of another dialog box, much like a page in a property sheet. This style allows the user to tab among the control windows of a child dialog box, use its accelerator keys, and so on.

Absolute alignment

DS_ABSALIGN

Indicates that the coordinates of the dialog box are screen coordinates ; otherwise, Windows assumes they are client coordinates.

No idle msg.

DS_NOIDLEMSG

Suppresses WM_ENTERIDLE messages that Windows would otherwise send to the owner of the dialog box while the dialog box is displayed.

System modal

DS_SYSMODAL

Creates a system-modal dialog box. This style causes the dialog box to have the WS_EX_TOPMOST style, but otherwise has no effect on the dialog box or the behavior of other windows in the system when the dialog box is displayed.

Popup

WS_POPUP

Creates a dialog that has the WS_POPUP bit on. Normally this is the default.

Child

WS_CHILD

Creates a dialog that has the WS_CHILD window style. Normally this is not desired. The dialog box can’t leave the boundaries of its mother window.

No fail create

DS_NOFAILCREATE

Creates the dialog box even if errors occur ¾ for example, if a child window cannot be created or if the system cannot create a special data segment for an edit control.

Clip children

WS_CLIPCHILDREN

Avoids drawing in child windows

Local edit

DS_LOCALEDIT

Applies to 16-bit applications only. This style directs edit controls in the dialog box to allocate memory from the application’s data segment. Otherwise, edit controls allocate storage from a global memory object. Somehow this button has resisted the port from 16 bit weditres...

3D look

DS_3DLOOK

This style is required only by Win32-based applications compiled for versions of Windows earlier than Windows 95 or Windows NT 4.0. The system automatically applies the three-dimensional look to dialog boxes created by applications compiled for current versions of Windows.

Center

DS_CENTER

Centers the dialog box in the working area ; that is, the area not obscured by the tray.

Visible

WS_VISIBLE

Show the dialog when it starts

Context help

DS_CONTEXTHELP

Includes a question mark in the title bar of the dialog box. When the user clicks the question mark, the cursor changes to a question mark with a pointer. If the 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 procedure, which should call the WinHelp function using the HELP_WM_HELP command. The Help application displays a pop-up window that typically contains help for the control.Note that DS_CONTEXTHELP is just 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.

Disabled

WS_DISABLED

Creates a window that is disabled at startup.

Button

Style

Effect

Title

WS_CAPTION

Shows a dialog box title

Min button

WS_MINIMIZE

Minimize control in titlebar

Max button

WS_MAXIMIZE

Maximize button in titlebar

System menu

WS_SYSMENU

System menu

Vertical/horizontal scroll

WS_HSCROLL/WS_VSCROLL

Scroll bars. Normally never used