Common API functions (10): hardware and system functions

Activatekeyboardlayout	Activate a new keyboard layout. The keyboard layout defines the position and meaning of keys on a physical keyboard.
BEEP	Used to generate simple sound
Chartooem	Converts a string from an ANSI character set to an OEM character set.
Clipcursor	Restrict pointers to specified regions
Convertdefalocallocale	Converts a special local identifier to a real local ID.
Createcaret	Creates an insert operator (cursor) based on the specified information and selects it as the default insert operator of the specified window.
Destroycaret	Clears (destroys) an insert Operator
Enumcalendarinfo	Enumerate calendar information available in the specified "local" Environment
Enumdateformats	Lists the long and short date formats available in the specified "local" settings.
Enumsystemcodepages	Enumeration systems that have been installed or supportedCodePage
Enumsystemlocales	Enumeration system has been installed or supports "local" Settings
Enumtimeformats	Enumerate the time formats applicable to a specified place
Exitwindowsex	Exit windows and restart with specific options
Expandenvironmentstrings	Expanded environment string
Freeenvironmentstrings	Translate the specified environment string
Getacp	Determine the ANSI code page currently in effect
Getasynckeystate	Determines the status of the specified virtual key when a function is called.
Getcaretblinktime	Determine the blinking frequency of the insert operator cursor
Getcaretpos	Judge the current position of the insert Operator
Getclipcursor	Obtains a rectangle to describe the cut area currently specified by the mouse pointer.
Getcommandline	Returns a pointer to the current command line buffer.
Getcomputername	Get the name of this computer
Getcpinfo	Obtains information related to the specified code page.
Getcurrencyformat	Format a number based on the currency format for the specified "place" setting
Getcursor	Obtains the handle of the currently selected mouse pointer.
Getcursorpos	Obtains the current cursor position.
Getdateformat	Format a system date in the specified "local" Format
Getdoubleclicktime	Determine the interval between two consecutive mouse clicks that will be processed as a double-click event
Getenvironmentstrings	Allocates a memory block that contains the current environment string and returns a handle.
Getenvironmentvariable	Obtains the value of an environment variable.
Getinputstate	Determines whether there are any pending mouse or Keyboard Events
Getkbcodepage	Replaced by getoemcp, which has the same functions
Getkeyboardlayout	Obtains a handle to describe the specified application.ProgramKeyboard layout
Getkeyboardlayoutlist	Obtain a list Of all keyboard la s applicable to the System
Getkeyboardlayoutname	Get the name of the current active keyboard layout
Getkeyboardstate	Obtains the current status of each virtual key on the keyboard.
Getkeyboardtype	Learn about the keyboard in use
Getkeynametext	Determines the key name based on the scan code.
Getkeystate	For processed buttons, the status of the specified virtual key is determined during the last input.
Getlasterror	For the previously called API function, use this function to obtain the extended error message.
Getlocaleinfo	Obtains information related to a specified "location ".
Getlocaltime	Get local Date and Time
Getnumberformat	Format a number in a specific format for a specified "location"
Getoemcp	Determine the Windows code page converted between the OEM and ANSI character sets
Getqueuestatus	Determine the type of a pending message in the application Message Queue
Getsyscolor	Determines the color of the display object in the specified Windows
Getsystemdefaultlangid	Obtain the default language ID of the system.
Getsystemdefaultlcid	Obtain the current default system "local"
Getsysteminfo	Obtain information related to the underlying hardware platform
Getsystemmetrics	Returns information related to Windows.
Getsystempowerstatus	Obtains information about the current system power status.
Getsystemtime	Obtains the current system time in the coordinated world time format (UTC, also known as GMT ).
Getsystemtimeadjustment	Synchronize the internal system clock with an external clock signal source
Getthreadlocale	Obtain the local ID of the current thread
Gettickcount	Used to obtain the length of time (milliseconds) that has elapsed since Windows was started)
Gettimeformat	Format a system time in a specific format for the currently specified "location"
Gettimezoneinformation	Obtains information related to system time zone settings.
Getuserdefaultlangid	Obtain the default language ID for the current user
Getuserdefaultlcid	Obtains the default "local" setting of the current user.
GetUserName	Get the name of the current user
Getversion	Determine the currently running Windows and DOS versions
Getversionex	Obtain version information related to the platform and Operating System
Hidecaret	Hide the insert operator (cursor) in the specified window)
Isvalidcodepage	Determine whether a code page is valid
Isvalidlocale	Determine whether the local identifier is valid
Keybd_event	This function simulates keyboard operations.
Loadkeyboardlayout	Load a keyboard layout
Mapvirtualkey	Perform different scan codes and character Conversion Based on the specified ing type
Mapvirtualkeyex	Perform different scan codes and character Conversion Based on the specified ing type
Messagebeep	Play a system sound. The system sound distribution scheme is determined in the control panel.
Mouse_event	Simulate a mouse event
Oemkeyscan	Determines the scanning code and shift key status of an ASCII character in the OEM Character Set
Oemtochar	Converts a string from an OEM character set to an ANSI character set.
Setcaretblinktime	Specify the blinking frequency of the insert operator (cursor)
Setcaretpos	Specifies the insert operator position
Setcomputername	Set a new computer name
Setcursor	Set the specified mouse pointer to the current pointer.
Setcursorpos	Set the pointer position
Setdoubleclicktime	Set the interval between two consecutive mouse clicks that the system considers as a double-click event
Setenvironmentvariable	Set an environment variable to a specified value.
Setkeyboardstate	Sets the current status of each virtual key on the keyboard.
Setlocaleinfo	Change User "local" Settings
Setlocaltime	Set the current local time
Setsyscolors	Sets the color of the objects displayed in the specified window.
Setsystemcursor	Change any standard system pointer
Setsystemtime	Set the current system time
Setsystemtimeadjustment	Regularly Add a calibration value to synchronize the internal system clock with an external clock signal source
Setthreadlocale	Set a place for the current thread
Settimezoneinformation	Set system time zone information
Showcaret	Display the insert operator (cursor) in the specified window)
Showcursor	Control the visibility of the mouse pointer
Swapmousebutton	Determines whether to swap the left and right mouse keys
Systemparametersinfo	Obtain and set a large number of Windows System Parameters
Systemtimetotzspecificlocaltime	Convert system time to local time
Toascii	Converts a virtual key into ASCII characters based on the current scan code and keyboard information.
Tounicode	Converts a virtual key to a Unicode character based on the current scan code and keyboard information.
Unloadkeyboardlayout	Detach a specified keyboard layout
Vkkeyscan	Checks the status of the virtual key code and shift key for an ASCII character in the Windows character set.