QtWin Namespace

The QtWin namespace contains miscellaneous Windows-specific functions. More...

Header:	#include <QtWin>
qmake:	QT += winextras

Types

enum	HBitmapFormat { HBitmapNoAlpha, HBitmapPremultipliedAlpha, HBitmapAlpha }
enum	WindowFlip3DPolicy { FlipDefault, FlipExcludeAbove, FlipExcludeBelow }

void	setWindowFlip3DPolicy(QWidget *window, WindowFlip3DPolicy policy)

This enum defines how the conversion between HBITMAP and QPixmap is performed.

Constant	Value	Description
`QtWin::HBitmapNoAlpha`	`0`	The alpha channel is ignored and always treated as being set to fully opaque. This is preferred if the `HBITMAP` is used with standard GDI calls, such as `BitBlt()`.
`QtWin::HBitmapPremultipliedAlpha`	`1`	The `HBITMAP` is treated as having an alpha channel and premultiplied colors. This is preferred if the `HBITMAP` is accessed through the `AlphaBlend()` GDI function.
`QtWin::HBitmapAlpha`	`2`	The `HBITMAP` is treated as having a plain alpha channel. This is the preferred format if the `HBITMAP` is going to be used as an application icon or a systray icon.

This enum was introduced or modified in Qt 5.2.

See also fromHBITMAP() and toHBITMAP().

This enum type specifies the Flip3D window policy.

Constant	Value	Description
`QtWin::FlipDefault`	`0`	Let the OS decide whether to include the window in the Flip3D rendering.
`QtWin::FlipExcludeAbove`	`2`	Exclude the window from Flip3D and display it above the Flip3D rendering.
`QtWin::FlipExcludeBelow`	`1`	Exclude the window from Flip3D and display it below the Flip3D rendering.

This enum was introduced or modified in Qt 5.2.

See also setWindowFlip3DPolicy().

This function overloads QtWin::setWindowFlip3DPolicy().

This function was introduced in Qt 5.2.