DWM_THUMBNAIL_PROPERTIES structure (dwmapi.h)

Specifies Desktop Window Manager (DWM) thumbnail properties. Used by the DwmUpdateThumbnailProperties function.

Syntax

typedef struct _DWM_THUMBNAIL_PROPERTIES {
  DWORD dwFlags;
  RECT  rcDestination;
  RECT  rcSource;
  BYTE  opacity;
  BOOL  fVisible;
  BOOL  fSourceClientAreaOnly;
} DWM_THUMBNAIL_PROPERTIES, *PDWM_THUMBNAIL_PROPERTIES;

Members

dwFlags

A bitwise combination of DWM thumbnail constant values that indicates which members of this structure are set.

rcDestination

The area in the destination window where the thumbnail will be rendered.

rcSource

The region of the source window to use as the thumbnail. By default, the entire window is used as the thumbnail.

opacity

The opacity with which to render the thumbnail. 0 is fully transparent while 255 is fully opaque. The default value is 255.

fVisible

TRUE to make the thumbnail visible; otherwise, FALSE. The default is FALSE.

fSourceClientAreaOnly

TRUE to use only the thumbnail source's client area; otherwise, FALSE. The default is FALSE.

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2008 [desktop apps only]
Header	dwmapi.h