CControlBar::CalcDynamicLayout

Статья
10/16/2008

The framework calls this member function to calculate the dimensions of a dynamic toolbar.

virtual CSize CalcDynamicLayout(
   int nLength,
   DWORD nMode 
);

Параметры

nLength
The requested dimension of the control bar, either horizontal or vertical, depending on dwMode.

nMode
The following predefined flags are used to determine the height and width of the dynamic control bar. Use the bitwise-OR (|) operator to combine the flags.

Layout mode flags	What it means
LM_STRETCH	Indicates whether the control bar should be stretched to the size of the frame. Set if the bar is not a docking bar (not available for docking). Not set when the bar is docked or floating (available for docking). If set, LM_STRETCH ignores nLength and returns dimensions based on the LM_HORZ state. LM_STRETCH works similarly to the bStretch parameter used in CalcFixedLayout; see that member function for more information about the relationship between stretching and orientation.
LM_HORZ	Indicates that the bar is horizontally or vertically oriented. Set if the bar is horizontally oriented, and if it is vertically oriented, it is not set. LM_HORZ works similarly to the bHorz parameter used in CalcFixedLayout; see that member function for more information about the relationship between stretching and orientation.
LM_MRUWIDTH	Most Recently Used Dynamic Width. Ignores nLength parameter and uses the remembered most recently used width.
LM_HORZDOCK	Horizontal Docked Dimensions. Ignores nLength parameter and returns the dynamic size with the largest width.
LM_VERTDOCK	Vertical Docked Dimensions. Ignores nLength parameter and returns the dynamic size with the largest height.
LM_LENGTHY	Set if nLength indicates height (Y-direction) instead of width.
LM_COMMIT	Resets LM_MRUWIDTH to current width of floating control bar.

Возвращаемое значение

The control bar size, in pixels, of a CSize object.

Заметки

Override this member function to provide your own dynamic layout in classes you derive from CControlBar. MFC classes derived from CControlBar, such as CToolbar, override this member function and provide their own implementation.