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WTNCA Values

Specifies flags that modify window visual style attributes. Use one, or a bitwise combination of the following values.

Constant/value	Description
WTNCA_NODRAWCAPTION 0x00000001	Prevents the window caption from being drawn.
WTNCA_NODRAWICON 0x00000002	Prevents the system icon from being drawn.
WTNCA_NOSYSMENU 0x00000004	Prevents the system icon menu from appearing.
WTNCA_NOMIRRORHELP 0x00000008	Prevents mirroring of the question mark, even in right-to-left (RTL) layout.
WTNCA_VALIDBITS	A mask that contains all the valid bits.

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

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