STICKYKEYS structure (winuser.h)

Contains information about the StickyKeys accessibility feature. When the StickyKeys feature is on, the user can press a modifier key (SHIFT, CTRL, or ALT) and then another key in sequence rather than at the same time, to enter shifted (modified) characters and other key combinations. Pressing a modifier key once latches the key down until the user presses a non-modifier key or clicks a mouse button. Pressing a modifier key twice locks the key until the user presses the key a third time.

Syntax

typedef struct tagSTICKYKEYS {
  UINT  cbSize;
  DWORD dwFlags;
} STICKYKEYS, *LPSTICKYKEYS;

Members

cbSize

Type: DWORD

Specifies the size, in bytes, of this structure.

dwFlags

Type: DWORD

A set of bit-flags that specify properties of the StickyKeys feature. The following bit-flag values are defined:

Remarks

An application uses a STICKYKEYS structure when calling the SystemParametersInfo function with the uiAction parameter set to SPI_GETSTICKYKEYS or SPI_SETSTICKYKEYS. When using SPI_GETSTICKYKEYS, you must specify the cbSize member of the STICKYKEYS structure; the SystemParametersInfo function fills the remaining members. You must specify all structure members when using the SPI_SETSTICKYKEYS value.

If you call SystemParametersInfo with the SPI_SETSTICKYKEYS value, the following flags are ignored:

• SKF_LALTLATCHED
• SKF_LCTLLATCHED
• SKF_LSHIFTLATCHED
• SKF_RALTLATCHED
• SKF_RCTLLATCHED
• SKF_RSHIFTLATCHED
• SKF_LALTLOCKED
• SKF_LCTLLOCKED
• SKF_LSHIFTLOCKED
• SKF_RALTLOCKED
• SKF_RCTLLOCKED
• SKF_RSHIFTLOCKED

Requirements

See also

Accessibility Structures

SystemParametersInfo