Class Dwm

Dwm Utils class

Inheritance

System.Object

Dwm

Namespace: Dapplo.Windows.DesktopWindowsManager

Assembly: Dapplo.Windows.DesktopWindowsManager.dll

Syntax

public static class Dwm : object

Properties

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ColorizationColor

Return the AERO Color

Declaration

public static Color ColorizationColor { get; }

Property Value

Type	Description
Color

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ColorizationSystemDrawingColor

Return the AERO Color

Declaration

public static System.Drawing.Color ColorizationSystemDrawingColor { get; }

Property Value

Type	Description
System.Drawing.Color

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IsDwmEnabled

Helper method for an easy DWM check

Declaration

public static bool IsDwmEnabled { get; }

Property Value

Type	Description
System.Boolean	bool true if DWM is available AND active

Methods

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DisableComposition()

Disable composition

Declaration

public static void DisableComposition()

DwmEnableBlurBehindWindow(IntPtr, ref DwmBlurBehind)

See DwmEnableBlurBehindWindow function Enables the blur effect on a specified window.

Declaration

public static HResult DwmEnableBlurBehindWindow(IntPtr hwnd, ref DwmBlurBehind blurBehind)

Parameters

Type	Name	Description
IntPtr	hwnd	The handle to the window on which the blur behind data is applied.
DwmBlurBehind	blurBehind	DwmBlurBehind

Returns

Type	Description
HResult	HResult

DwmEnableComposition(UInt32)

See DwmEnableComposition function As of Windows 8, calling this function with DWM_EC_DISABLECOMPOSITION has no effect. However, the function will still return a success code.

Declaration

public static HResult DwmEnableComposition(uint uCompositionAction)

Parameters

Type	Name	Description
System.UInt32	uCompositionAction	DWM_EC_ENABLECOMPOSITION to enable DWM composition; DWM_EC_DISABLECOMPOSITION to disable composition.

Returns

Type	Description
HResult	HResult

DwmGetWindowAttribute(IntPtr, DwmWindowAttributes, out RECT, Int32)

See DwmGetWindowAttribute function Retrieves the current value of a specified attribute applied to a window. TODO: Currently only DWMWA_EXTENDED_FRAME_BOUNDS is supported, due to the type of lpRect

Declaration

public static HResult DwmGetWindowAttribute(IntPtr hwnd, DwmWindowAttributes dwAttribute, out RECT lpRect, int size)

Parameters

Type	Name	Description
IntPtr	hwnd	The handle to the window from which the attribute data is retrieved.
DwmWindowAttributes	dwAttribute	The attribute to retrieve, specified as a DwmWindowAttributes value.
RECT	lpRect	A pointer to a value that, when this function returns successfully, receives the current value of the attribute. The type of the retrieved value depends on the value of the dwAttribute parameter.
System.Int32	size

Returns

Type	Description
HResult	The size of the DWMWINDOWATTRIBUTE value being retrieved. The size is dependent on the type of the pvAttribute parameter.

DwmpStartOrStopFlip3D()

Activate Windows + Tab effect

Declaration

public static bool DwmpStartOrStopFlip3D()

Returns

Type	Description
System.Boolean	bool if it worked

DwmQueryThumbnailSourceSize(IntPtr, out SIZE)

Retrieves the source size of the Desktop Window Manager (DWM) thumbnail.

Declaration

public static HResult DwmQueryThumbnailSourceSize(IntPtr hThumbnail, out SIZE size)

Parameters

Type	Name	Description
IntPtr	hThumbnail	A handle to the thumbnail to retrieve the source window size from.
SIZE	size	a SIZE structure that, when this function returns successfully, receives the size of the source thumbnail.

Returns

Type	Description
HResult	HResult

DwmRegisterThumbnail(IntPtr, IntPtr, out IntPtr)

Creates a Desktop Window Manager (DWM) thumbnail relationship between the destination and source windows.

Declaration

public static HResult DwmRegisterThumbnail(IntPtr hwndDestination, IntPtr hwndSource, out IntPtr phThumbnailId)

Parameters

Type	Name	Description
IntPtr	hwndDestination	The handle to the window that will use the DWM thumbnail. Setting the destination window handle to anything other than a top-level window type will result in a return value of E_INVALIDARG.
IntPtr	hwndSource	The handle to the window to use as the thumbnail source. Setting the source window handle to anything other than a top-level window type will result in a return value of E_INVALIDARG.
IntPtr	phThumbnailId	A pointer to a handle that, when this function returns successfully, represents the registration of the DWM thumbnail.

Returns

Type	Description
HResult	HResult

DwmSetWindowAttribute(IntPtr, DwmWindowAttributes, IntPtr, UInt32)

Sets the value of non-client rendering attributes for a window. See DwmSetWindowAttribute function

Declaration

public static HResult DwmSetWindowAttribute(IntPtr hwnd, DwmWindowAttributes dwAttributeToSet, IntPtr pvAttributeValue, uint cbAttribute)

Parameters

Type	Name	Description
IntPtr	hwnd	IntPtr with the handle to the window that will receive the attributes.
DwmWindowAttributes	dwAttributeToSet	A single DWMWINDOWATTRIBUTE flag to apply to the window. This parameter specifies the attribute and the pvAttribute parameter points to the value of that attribute.
IntPtr	pvAttributeValue	A pointer to the value of the attribute specified in the dwAttribute parameter. Different DWMWINDOWATTRIBUTE flags require different value types.
System.UInt32	cbAttribute	The size, in bytes, of the value type pointed to by the pvAttribute parameter.

Returns

Type	Description
HResult

DwmUnregisterThumbnail(IntPtr)

Removes a Desktop Window Manager (DWM) thumbnail relationship created by the DwmRegisterThumbnail function.

Declaration

public static HResult DwmUnregisterThumbnail(IntPtr hThumbnailId)

Parameters

Type	Name	Description
IntPtr	hThumbnailId	The handle to the thumbnail relationship to be removed. Null or non-existent handles will result in a return value of E_INVALIDARG.

Returns

Type	Description
HResult	HResult

DwmUpdateThumbnailProperties(IntPtr, ref DwmThumbnailProperties)

Updates the properties for a Desktop Window Manager (DWM) thumbnail.

Declaration

public static HResult DwmUpdateThumbnailProperties(IntPtr hThumbnailId, ref DwmThumbnailProperties props)

Parameters

Type	Name	Description
IntPtr	hThumbnailId	IntPtr The handle to the DWM thumbnail to be updated. Null or invalid thumbnails, as well as thumbnails owned by other processes will result in a return value of E_INVALIDARG.
DwmThumbnailProperties	props	A pointer to a DwmThumbnailProperties structure that contains the new thumbnail properties.

Returns

Type	Description
HResult	HResult

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EnableComposition()

Enable DWM composition

Declaration

public static void EnableComposition()

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GetExtendedFrameBounds(IntPtr, out RECT)

Helper method to get the window size for DWM Windows

Declaration

public static bool GetExtendedFrameBounds(IntPtr hWnd, out RECT rectangle)

Parameters

Type	Name	Description
IntPtr	hWnd	IntPtr
RECT	rectangle	out RECT

Returns

Type	Description
System.Boolean	bool true if it worked

GetSharedSurface(IntPtr, Int64, UInt32, UInt32, ref UInt32, out IntPtr, UInt64)

Retrieves the shared surface of the specified hWnd, maybe https://github.com/notr1ch/DWMCapture can help on the usage. http://undoc.airesoft.co.uk/user32.dll/DwmGetDxSharedSurface.php?

Declaration

public static int GetSharedSurface(IntPtr hWnd, long adapterLuid, uint one, uint two, ref uint pD3DFormat, out IntPtr pSharedHandle, ulong unknown)

Parameters

Type	Name	Description
IntPtr	hWnd	IntPtr
System.Int64	adapterLuid
System.UInt32	one
System.UInt32	two
System.UInt32	pD3DFormat
IntPtr	pSharedHandle
System.UInt64	unknown

Returns

Type	Description
System.Int32

UpdateWindowShared(IntPtr, Int32, Int32, Int32, IntPtr, IntPtr)

maybe https://github.com/notr1ch/DWMCapture can help on the usage.

Declaration

public static int UpdateWindowShared(IntPtr hWnd, int one, int two, int three, IntPtr hMonitor, IntPtr unknown)

Parameters

Type	Name	Description
IntPtr	hWnd	IntPtr
System.Int32	one
System.Int32	two
System.Int32	three
IntPtr	hMonitor
IntPtr	unknown

Returns

Type	Description
System.Int32