Visual C++ and MFC Programming 2nd Edition

Chapter 15: Fundamental Controls Visual C++ and MFC Fundamentals

Value Description

wndBottom This window will be positioned under all the other windows, unless

it is already at the bottom. If this window is a topmost window, it

will not be anymore

wndTop This window will be positioned on top of all the other windows,

unless it is already on top

wndTopMost This window becomes positioned on top of all other window as if it

were created with the WS_EX_TOPMOST extended style. In

other words, even if its parent window is sent under other window,

this particular one stays on top.

wndNoTopMost If this window is not a top most window, it becomes positioned on

top of all other windows, except the window that is top most.

If this window was top most when it called this method, it is not

top most anymore. If there is another top most window on the

screen, that one becomes top most but this one becomes positioned

under that one.

If you are not trying to reposition the window in the Z coordinate, pass this argument as

NULL or include the SWP_NOZORDER value for the nFlags argument.

The nFlags argument is used to define how the location arguments (x and y) and the

dimensions (cx and cy) will be dealt with. These other arguments have the following

roles:

Argument Description

The argument is

ignored if nFlags has

the following value

x This specifies the new distance from the left

border of the parent to the left border of this

window. This depends on the type of window

and the type of parent.

SWP_NOMOVE

y This specifies the new distance from the top

border of the parent to the top border of this

window. This depends on the type of window

and the type of parent.

SWP_NOMOVE

cx This is the new width of this window SWP_NOSIZE

cy The argument is the new height of this

window

SWP_NOSIZE

Additionally, the nFlags argument can have one of the following values or one of the

above nFlags values can be combined with the following values:

Value Description

SWP_DRAWFRAME Draws a frame around the window

SWP_FRAMECHANGED This value sends a WM_NCCALCSIZE message to the

window

SWP_HIDEWINDOW Hides this window

SWP_NOACTIVATE If the pWndInsertAfter value specified that the window

should be reposositioned and activated, which is done if

the window is to be positioned on top of another, this