API -> GetKeyState [ Library : user32.dll, Category : Keyboard ] [C#, VB, VB.net]

GetKeyState

Library : user32.dll Category : Keyboard

Api Example(s)
Determine how a control got the focus
GetCapsLockKey - Get the state of the CapsLock key
GetInsertKey - Get the current state of the Insert key
GetNumLockKey - Get the state of the NumLock key
GetScrollLockKey - Get the state of the Scroll Lock key
PressVirtKey - Press and/or release any key
SetCapsLockKey - Set the state of the Caps Lock key
SetNumLockKey - Set the state of the Num Lock key
SetScrollLockKey - Set the state of the ScrollLock key
Detecting Keyboard strokes
How to create XP-Style Balloon Tooltip in VB.net (Updated)

API Description :

The GetKeyState function retrieves the status of the specified virtual key. The status specifies whether the key is up, down, or toggled (on, off - alternating each time the key is pressed).

VB Declaration :

Show Multiline Public Private

Declare Function GetKeyState Lib "user32" (ByVaL nVirtKey As Long) As Integer

Parameters :

· nVirtKey
Specifies a virtual key. If the desired virtual key is a letter or digit (A through Z, a through z, or 0 through 9), nVirtKey must be set to the ASCII value of that character. For other keys, it must be a virtual-key code.
If a non-English ke

Return :

If the function succeeds, the return value specifies the status of the given virtual key. If the high-order bit is 1, the key is down; otherwise, it is up. If the low-order bit is 1, the key is toggled. A key, such as the CAPS LOCK key, is toggled if it i

OS Requirement :

Requires Windows NT 3.1 or later
Requires Windows 95 or later

Dotnet Replacement :