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SetLayout function

The SetLayout function changes the layout of a device context (DC).

Syntax

C++


DWORD SetLayout(
  _In_ HDC   hdc,
  _In_ DWORD dwLayout
);

Parameters

hdc [in]

A handle to the DC.

dwLayout [in]

The DC layout. This parameter can be one or more of the following values.

Value	Meaning
LAYOUT_BITMAPORIENTATIONPRESERVED	Disables any reflection during BitBlt and StretchBlt operations.
LAYOUT_RTL	Sets the default horizontal layout to be right to left.

Return value

If the function succeeds, it returns the previous layout of the DC.

If the function fails, it returns GDI_ERROR.

Remarks

The layout specifies the order in which text and graphics are revealed in a window or a device context. The default is left to right. The SetLayout function changes this to be right to left, which is the standard in Arabic and Hebrew cultures.

Once the LAYOUT_RTL flag is selected, flags normally specifying right or left are reversed. To avoid confusion, consider defining alternate words for standard flags, such as those in the following table.

Standard flag	Suggested alternate name
WS_EX_RIGHT	WS_EX_TRAILING
WS_EX_RTLREADING	WS_EX_REVERSEREADING
WS_EX_LEFTSCROLLBAR	WS_EX_LEADSCROLLBAR
ES_LEFT	ES_LEAD
ES_RIGHT	ES_TRAIL
EC_LEFTMARGIN	EC_LEADMARGIN
EC_RIGHTMARGIN	EC_TRAILMARGIN

SetLayout cannot modify drawing directly into the bits of a DIB.

For more information, see "Window Layout and Mirroring" in Window Features.

Requirements

Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Wingdi.h (include Windows.h)
Library	Gdi32.lib
DLL	Gdi32.dll