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IDCompositionTexture::SetAlphaMode method (dcomp.h)

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Informs the Desktop Window Manager (DWM) whether alpha pixels in the texture should be honored or ignored.

Syntax

HRESULT SetAlphaMode(
  DXGI_ALPHA_MODE alphaMode
);

Parameters

alphaMode

Type: _In_ DXGI_ALPHA_MODE

Indicates whether alpha pixels in the texture should be honored or ignored.

Value Meaning
DXGI_ALPHA_MODE_UNSPECIFIED The alpha channel isn't specified. This value has the same effect as DXGI_ALPHA_MODE_IGNORE.
DXGI_ALPHA_MODE_PREMULTIPLIED The color channels contain values that are premultiplied with the alpha channel.
DXGI_ALPHA_MODE_IGNORE The alpha channel should be ignored, and the bitmap should be rendered opaquely.

Return value

Type: HRESULT

If the function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirements

Requirement Value
Header dcomp.h

See also