windows

package
v1.2.16 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Jun 28, 2026 License: MIT, Unlicense Imports: 6 Imported by: 0

Documentation

Rendered for windows/amd64

Overview

Win32 syscall .Call() returns non-nil errno on success; struct fields mirror Win32 ABI; (*T)(unsafe.Pointer(lParam)) is the standard window-message pattern.

Index

Constants

View Source 
const (
	TRUE = 1

	CPS_CANCEL = 0x0004

	CS_HREDRAW     = 0x0002
	CS_INSERTCHAR  = 0x2000
	CS_NOMOVECARET = 0x4000
	CS_VREDRAW     = 0x0001
	CS_OWNDC       = 0x0020

	CW_USEDEFAULT = -2147483648

	GWL_STYLE = ^(uintptr(16) - 1)

	GCS_COMPSTR       = 0x0008
	GCS_COMPREADSTR   = 0x0001
	GCS_CURSORPOS     = 0x0080
	GCS_DELTASTART    = 0x0100
	GCS_RESULTREADSTR = 0x0200
	GCS_RESULTSTR     = 0x0800

	CFS_POINT        = 0x0002
	CFS_CANDIDATEPOS = 0x0040

	HTCAPTION     = 2
	HTCLIENT      = 1
	HTLEFT        = 10
	HTRIGHT       = 11
	HTTOP         = 12
	HTTOPLEFT     = 13
	HTTOPRIGHT    = 14
	HTBOTTOM      = 15
	HTBOTTOMLEFT  = 16
	HTBOTTOMRIGHT = 17

	IDC_APPSTARTING = 32650
	IDC_ARROW       = 32512
	IDC_CROSS       = 32515
	IDC_HAND        = 32649
	IDC_HELP        = 32651
	IDC_IBEAM       = 32513
	IDC_NO          = 32648
	IDC_SIZEALL     = 32646
	IDC_SIZENESW    = 32643
	IDC_SIZENS      = 32645
	IDC_SIZENWSE    = 32642
	IDC_SIZEWE      = 32644
	IDC_UPARROW     = 32516
	IDC_WAIT        = 32514

	INFINITE = 0xFFFFFFFF

	LOGPIXELSX = 88

	MDT_EFFECTIVE_DPI = 0

	MONITOR_DEFAULTTOPRIMARY = 1
	MONITOR_DEFAULTTONEAREST = 2

	NI_COMPOSITIONSTR = 0x0015

	SIZE_MAXIMIZED = 2
	SIZE_MINIMIZED = 1
	SIZE_RESTORED  = 0

	WA_INACTIVE    = 0
	WA_ACTIVE      = 1
	WA_CLICKACTIVE = 2

	SCS_SETSTR = GCS_COMPREADSTR | GCS_COMPSTR

	SM_CXSIZEFRAME = 32
	SM_CYSIZEFRAME = 33

	SW_SHOWDEFAULT   = 10
	SW_SHOWMINIMIZED = 2
	SW_SHOWMAXIMIZED = 3
	SW_SHOWNORMAL    = 1
	SW_SHOW          = 5

	SWP_FRAMECHANGED  = 0x0020
	SWP_NOACTIVATE    = 0x0010
	SWP_NOMOVE        = 0x0002
	SWP_NOOWNERZORDER = 0x0200
	SWP_NOSIZE        = 0x0001
	SWP_NOZORDER      = 0x0004
	SWP_SHOWWINDOW    = 0x0040

	USER_TIMER_MINIMUM = 0x0000000A

	VK_CONTROL = 0x11
	VK_LWIN    = 0x5B
	VK_MENU    = 0x12
	VK_RWIN    = 0x5C
	VK_SHIFT   = 0x10

	VK_BACK   = 0x08
	VK_DELETE = 0x2e
	VK_DOWN   = 0x28
	VK_END    = 0x23
	VK_ESCAPE = 0x1b
	VK_HOME   = 0x24
	VK_LEFT   = 0x25
	VK_NEXT   = 0x22
	VK_PRIOR  = 0x21
	VK_RIGHT  = 0x27
	VK_RETURN = 0x0d
	VK_SPACE  = 0x20
	VK_TAB    = 0x09
	VK_UP     = 0x26

	VK_F1  = 0x70
	VK_F2  = 0x71
	VK_F3  = 0x72
	VK_F4  = 0x73
	VK_F5  = 0x74
	VK_F6  = 0x75
	VK_F7  = 0x76
	VK_F8  = 0x77
	VK_F9  = 0x78
	VK_F10 = 0x79
	VK_F11 = 0x7A
	VK_F12 = 0x7B

	VK_OEM_1      = 0xba
	VK_OEM_PLUS   = 0xbb
	VK_OEM_COMMA  = 0xbc
	VK_OEM_MINUS  = 0xbd
	VK_OEM_PERIOD = 0xbe
	VK_OEM_2      = 0xbf
	VK_OEM_3      = 0xc0
	VK_OEM_4      = 0xdb
	VK_OEM_5      = 0xdc
	VK_OEM_6      = 0xdd
	VK_OEM_7      = 0xde
	VK_OEM_102    = 0xe2

	UNICODE_NOCHAR = 65535

	WM_ACTIVATE              = 0x0006
	WM_ACTIVATEAPP           = 0x001C
	WM_CANCELMODE            = 0x001F
	WM_CHAR                  = 0x0102
	WM_CLOSE                 = 0x0010
	WM_COPYDATA              = 0x004A
	WM_CREATE                = 0x0001
	WM_DISPLAYCHANGE         = 0x007E
	WM_DPICHANGED            = 0x02E0
	WM_DWMCOMPOSITIONCHANGED = 0x031E
	WM_DESTROY               = 0x0002
	WM_ERASEBKGND            = 0x0014
	WM_GETMINMAXINFO         = 0x0024
	WM_IME_COMPOSITION       = 0x010F
	WM_IME_ENDCOMPOSITION    = 0x010E
	WM_IME_STARTCOMPOSITION  = 0x010D
	WM_KEYDOWN               = 0x0100
	WM_KEYUP                 = 0x0101
	WM_KILLFOCUS             = 0x0008
	WM_LBUTTONDOWN           = 0x0201
	WM_LBUTTONUP             = 0x0202
	WM_MBUTTONDOWN           = 0x0207
	WM_MBUTTONUP             = 0x0208
	WM_MOUSEMOVE             = 0x0200
	WM_MOUSEWHEEL            = 0x020A
	WM_MOUSEHWHEEL           = 0x020E
	WM_NCACTIVATE            = 0x0086
	WM_NCHITTEST             = 0x0084
	WM_NCCALCSIZE            = 0x0083
	WM_PAINT                 = 0x000F
	WM_POINTERCAPTURECHANGED = 0x024C
	WM_POINTERDOWN           = 0x0246
	WM_POINTERENTER          = 0x0249
	WM_POINTERLEAVE          = 0x024A
	WM_POINTERUP             = 0x0247
	WM_POINTERUPDATE         = 0x0245
	WM_POINTERWHEEL          = 0x024E
	WM_POINTERHWHEEL         = 0x024F
	WM_QUIT                  = 0x0012
	WM_RBUTTONDOWN           = 0x0204
	WM_RBUTTONUP             = 0x0205
	WM_SETCURSOR             = 0x0020
	WM_SETFOCUS              = 0x0007
	WM_SHOWWINDOW            = 0x0018
	WM_SIZE                  = 0x0005
	WM_STYLECHANGED          = 0x007D
	WM_SYSKEYDOWN            = 0x0104
	WM_SYSKEYUP              = 0x0105
	WM_TIMER                 = 0x0113
	WM_UNICHAR               = 0x0109
	WM_USER                  = 0x0400
	WM_WINDOWPOSCHANGED      = 0x0047

	WS_CLIPCHILDREN     = 0x02000000
	WS_CLIPSIBLINGS     = 0x04000000
	WS_MAXIMIZE         = 0x01000000
	WS_ICONIC           = 0x20000000
	WS_VISIBLE          = 0x10000000
	WS_OVERLAPPED       = 0x00000000
	WS_OVERLAPPEDWINDOW = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME |
		WS_MINIMIZEBOX | WS_MAXIMIZEBOX
	WS_CAPTION     = 0x00C00000
	WS_SYSMENU     = 0x00080000
	WS_THICKFRAME  = 0x00040000
	WS_MINIMIZEBOX = 0x00020000
	WS_MAXIMIZEBOX = 0x00010000

	WS_EX_APPWINDOW  = 0x00040000
	WS_EX_WINDOWEDGE = 0x00000100

	QS_ALLINPUT = 0x04FF

	MWMO_WAITALL        = 0x0001
	MWMO_INPUTAVAILABLE = 0x0004

	WAIT_OBJECT_0 = 0

	PM_REMOVE   = 0x0001
	PM_NOREMOVE = 0x0000

	GHND = 0x0042

	CF_UNICODETEXT = 13
	IMAGE_BITMAP   = 0
	IMAGE_ICON     = 1
	IMAGE_CURSOR   = 2

	LR_CREATEDIBSECTION = 0x00002000
	LR_DEFAULTCOLOR     = 0x00000000
	LR_DEFAULTSIZE      = 0x00000040
	LR_LOADFROMFILE     = 0x00000010
	LR_LOADMAP3DCOLORS  = 0x00001000
	LR_LOADTRANSPARENT  = 0x00000020
	LR_MONOCHROME       = 0x00000001
	LR_SHARED           = 0x00008000
	LR_VGACOLOR         = 0x00000080
)
View Source 
const DWMWA_CLOAK = 13

DWMWA_CLOAK hides a window from the compositor without changing its window state, geometry or message flow — unlike SW_HIDE it keeps the window "shown" so it still sizes, paints and reports its mode. Used to keep the window invisible until its first frame is presented.

View Source 
const VREFRESH = 116

Variables

This section is empty.

Functions

func AdjustWindowRectEx 

func AdjustWindowRectEx(r *Rect, dwStyle uint32, bMenu int, dwExStyle uint32)

func CallMsgFilter 

func CallMsgFilter(m *Msg, nCode uintptr) bool

func CloseClipboard 

func CloseClipboard() error

func CreateWindowEx 

func CreateWindowEx(dwExStyle uint32, lpClassName uint16, lpWindowName string, dwStyle uint32, x, y, w, h int32, hWndParent, hMenu, hInstance syscall.Handle, lpParam uintptr) (syscall.Handle, error)

func DefWindowProc 

func DefWindowProc(hwnd syscall.Handle, msg uint32, wparam, lparam uintptr) uintptr

func DestroyWindow 

func DestroyWindow(hwnd syscall.Handle)

func DispatchMessage 

func DispatchMessage(m *Msg)

func DwmExtendFrameIntoClientArea 

func DwmExtendFrameIntoClientArea(hwnd syscall.Handle, margins Margins) error

func DwmSetCloak added in v1.2.10 

func DwmSetCloak(hwnd syscall.Handle, cloak bool) error

func EmptyClipboard 

func EmptyClipboard() error

func EnableMouseInPointer 

func EnableMouseInPointer(enable uint) error

func FindWindow 

func FindWindow(lpClassName string) (syscall.Handle, error)

func GetClipboardData 

func GetClipboardData(format uint32) (syscall.Handle, error)

func GetDC 

func GetDC(hwnd syscall.Handle) (syscall.Handle, error)

func GetDeviceCaps 

func GetDeviceCaps(hdc syscall.Handle, index int32) int

func GetKeyState 

func GetKeyState(nVirtKey int32) int16

func GetMessage 

func GetMessage(m *Msg, hwnd syscall.Handle, wMsgFilterMin, wMsgFilterMax uint32) int32

func GetMessageTime 

func GetMessageTime() time.Duration

func GetModuleHandle 

func GetModuleHandle() (syscall.Handle, error)

func GetSystemDPI 

func GetSystemDPI() int

func GetSystemMetrics 

func GetSystemMetrics(nIndex int) int

func GetWindowDPI 

func GetWindowDPI(hwnd syscall.Handle) int

func GetWindowLong 

func GetWindowLong(hwnd syscall.Handle, index uintptr) (val uintptr)

func GlobalAlloc 

func GlobalAlloc(size int) (syscall.Handle, error)

func GlobalFree 

func GlobalFree(h syscall.Handle)

func GlobalLock 

func GlobalLock(h syscall.Handle) (unsafe.Pointer, error)

func GlobalUnlock 

func GlobalUnlock(h syscall.Handle)

func ImmGetCompositionString 

func ImmGetCompositionString(imc syscall.Handle, key int) string

func ImmGetCompositionValue 

func ImmGetCompositionValue(imc syscall.Handle, key int) int

func ImmGetContext 

func ImmGetContext(hwnd syscall.Handle) syscall.Handle

func ImmNotifyIME 

func ImmNotifyIME(imc syscall.Handle, action, index, value int)

func ImmReleaseContext 

func ImmReleaseContext(hwnd, imc syscall.Handle)

func ImmSetCandidateWindow 

func ImmSetCandidateWindow(imc syscall.Handle, x, y int)

func ImmSetCompositionWindow 

func ImmSetCompositionWindow(imc syscall.Handle, x, y int)

func KillTimer 

func KillTimer(hwnd syscall.Handle, nIDEvent uintptr) error

func LoadCursor 

func LoadCursor(curID uint16) (syscall.Handle, error)

func LoadImage 

func LoadImage(hInst syscall.Handle, res uint32, typ uint32, cx, cy int, fuload uint32) (syscall.Handle, error)

func MoveWindow 

func MoveWindow(hwnd syscall.Handle, x, y, width, height int32, repaint bool)

func MsgWaitForMultipleObjectsEx 

func MsgWaitForMultipleObjectsEx(nCount uint32, pHandles uintptr, millis, mask, flags uint32) (uint32, error)

func OpenClipboard 

func OpenClipboard(hwnd syscall.Handle) error

func PeekMessage 

func PeekMessage(m *Msg, hwnd syscall.Handle, wMsgFilterMin, wMsgFilterMax, wRemoveMsg uint32) bool

func PostMessage 

func PostMessage(hwnd syscall.Handle, msg uint32, wParam, lParam uintptr) error

func PostQuitMessage 

func PostQuitMessage(exitCode uintptr)

func RegisterClassEx 

func RegisterClassEx(cls *WndClassEx) (uint16, error)

func RegisterTouchWindow 

func RegisterTouchWindow(hwnd syscall.Handle, flags uint32) error

func ReleaseCapture 

func ReleaseCapture() bool

func ReleaseDC 

func ReleaseDC(hdc syscall.Handle)

func ScreenToClient 

func ScreenToClient(hwnd syscall.Handle, p *Point)

func SendMessage 

func SendMessage(hwnd syscall.Handle, msg uint32, wParam, lParam uintptr) error

func SetCapture 

func SetCapture(hwnd syscall.Handle) syscall.Handle

func SetClipboardData 

func SetClipboardData(format uint32, mem syscall.Handle) error

func SetCursor 

func SetCursor(h syscall.Handle)

func SetFocus 

func SetFocus(hwnd syscall.Handle)

func SetForegroundWindow 

func SetForegroundWindow(hwnd syscall.Handle)

func SetProcessDPIAware 

func SetProcessDPIAware()

func SetTimer 

func SetTimer(hwnd syscall.Handle, nIDEvent uintptr, uElapse uint32, timerProc uintptr) error

func SetWindowLong 

func SetWindowLong(hwnd syscall.Handle, idx uintptr, style uintptr)

func SetWindowPlacement 

func SetWindowPlacement(hwnd syscall.Handle, wp *WindowPlacement)

func SetWindowPos 

func SetWindowPos(hwnd syscall.Handle, hwndInsertAfter uint32, x, y, dx, dy int32, style uintptr)

func SetWindowText 

func SetWindowText(hwnd syscall.Handle, title string)

func ShowWindow 

func ShowWindow(hwnd syscall.Handle, nCmdShow int32)

func TranslateMessage 

func TranslateMessage(m *Msg)

func UnregisterClass 

func UnregisterClass(cls uint16, hInst syscall.Handle)

func UpdateWindow 

func UpdateWindow(hwnd syscall.Handle)

Types

type CandidateForm 

type CandidateForm struct {
	// contains filtered or unexported fields
}

type CompositionForm 

type CompositionForm struct {
	// contains filtered or unexported fields
}

type CopyDataStruct 

type CopyDataStruct struct {
	DwData uintptr
	CbData uint32
	LpData uintptr
}

type Margins 

type Margins struct {
	CxLeftWidth    int32
	CxRightWidth   int32
	CyTopHeight    int32
	CyBottomHeight int32
}

type MinMaxInfo 

type MinMaxInfo struct {
	PtReserved     Point
	PtMaxSize      Point
	PtMaxPosition  Point
	PtMinTrackSize Point
	PtMaxTrackSize Point
}

type MonitorInfo 

type MonitorInfo struct {
	Monitor  Rect
	WorkArea Rect
	Flags    uint32
	// contains filtered or unexported fields
}

func GetMonitorInfo 

func GetMonitorInfo(hwnd syscall.Handle) MonitorInfo

type Msg 

type Msg struct {
	Hwnd     syscall.Handle
	Message  uint32
	WParam   uintptr
	LParam   uintptr
	Time     uint32
	Pt       Point
	LPrivate uint32
}

type NCCalcSizeParams 

type NCCalcSizeParams struct {
	Rgrc  [3]Rect
	LpPos *WindowPos
}

type POINTER_BUTTON_CHANGE_TYPE 

type POINTER_BUTTON_CHANGE_TYPE int32
const (
	POINTER_CHANGE_NONE              POINTER_BUTTON_CHANGE_TYPE = 0
	POINTER_CHANGE_FIRSTBUTTON_DOWN  POINTER_BUTTON_CHANGE_TYPE = 1
	POINTER_CHANGE_FIRSTBUTTON_UP    POINTER_BUTTON_CHANGE_TYPE = 2
	POINTER_CHANGE_SECONDBUTTON_DOWN POINTER_BUTTON_CHANGE_TYPE = 3
	POINTER_CHANGE_SECONDBUTTON_UP   POINTER_BUTTON_CHANGE_TYPE = 4
	POINTER_CHANGE_THIRDBUTTON_DOWN  POINTER_BUTTON_CHANGE_TYPE = 5
	POINTER_CHANGE_THIRDBUTTON_UP    POINTER_BUTTON_CHANGE_TYPE = 6
	POINTER_CHANGE_FOURTHBUTTON_DOWN POINTER_BUTTON_CHANGE_TYPE = 7
	POINTER_CHANGE_FOURTHBUTTON_UP   POINTER_BUTTON_CHANGE_TYPE = 8
	POINTER_CHANGE_FIFTHBUTTON_DOWN  POINTER_BUTTON_CHANGE_TYPE = 9
	POINTER_CHANGE_FIFTHBUTTON_UP    POINTER_BUTTON_CHANGE_TYPE = 10
)

type POINTER_INFO_POINTER_FLAGS 

type POINTER_INFO_POINTER_FLAGS int32
const (
	POINTER_FLAG_NEW            POINTER_INFO_POINTER_FLAGS = 0x00000001
	POINTER_FLAG_INRANGE        POINTER_INFO_POINTER_FLAGS = 0x00000002
	POINTER_FLAG_INCONTACT      POINTER_INFO_POINTER_FLAGS = 0x00000004
	POINTER_FLAG_FIRSTBUTTON    POINTER_INFO_POINTER_FLAGS = 0x00000010
	POINTER_FLAG_SECONDBUTTON   POINTER_INFO_POINTER_FLAGS = 0x00000020
	POINTER_FLAG_THIRDBUTTON    POINTER_INFO_POINTER_FLAGS = 0x00000040
	POINTER_FLAG_FOURTHBUTTON   POINTER_INFO_POINTER_FLAGS = 0x00000080
	POINTER_FLAG_FIFTHBUTTON    POINTER_INFO_POINTER_FLAGS = 0x00000100
	POINTER_FLAG_PRIMARY        POINTER_INFO_POINTER_FLAGS = 0x00002000
	POINTER_FLAG_CONFIDENCE     POINTER_INFO_POINTER_FLAGS = 0x00004000
	POINTER_FLAG_CANCELED       POINTER_INFO_POINTER_FLAGS = 0x00008000
	POINTER_FLAG_DOWN           POINTER_INFO_POINTER_FLAGS = 0x00010000
	POINTER_FLAG_UPDATE         POINTER_INFO_POINTER_FLAGS = 0x00020000
	POINTER_FLAG_UP             POINTER_INFO_POINTER_FLAGS = 0x00040000
	POINTER_FLAG_WHEEL          POINTER_INFO_POINTER_FLAGS = 0x00080000
	POINTER_FLAG_HWHEEL         POINTER_INFO_POINTER_FLAGS = 0x00100000
	POINTER_FLAG_CAPTURECHANGED POINTER_INFO_POINTER_FLAGS = 0x00200000
	POINTER_FLAG_HASTRANSFORM   POINTER_INFO_POINTER_FLAGS = 0x00400000
)

type POINTER_INPUT_TYPE 

type POINTER_INPUT_TYPE int32
const (
	PT_POINTER  POINTER_INPUT_TYPE = 1
	PT_TOUCH    POINTER_INPUT_TYPE = 2
	PT_PEN      POINTER_INPUT_TYPE = 3
	PT_MOUSE    POINTER_INPUT_TYPE = 4
	PT_TOUCHPAD POINTER_INPUT_TYPE = 5
)

type Point 

type Point struct {
	X, Y int32
}

type PointerInfo 

type PointerInfo struct {
	PointerType           POINTER_INPUT_TYPE
	PointerId             uint32
	FrameId               uint32
	PointerFlags          POINTER_INFO_POINTER_FLAGS
	SourceDevice          syscall.Handle
	HwndTarget            syscall.Handle
	PtPixelLocation       Point
	PtHimetricLocation    Point
	PtPixelLocationRaw    Point
	PtHimetricLocationRaw Point
	DwTime                uint32
	HistoryCount          uint32
	InputData             int32
	DwKeyStates           uint32
	PerformanceCount      uint64
	ButtonChangeType      POINTER_BUTTON_CHANGE_TYPE
}

func GetPointerInfo 

func GetPointerInfo(pointerId uint32) (PointerInfo, error)

type Rect 

type Rect struct {
	Left, Top, Right, Bottom int32
}

func GetClientRect 

func GetClientRect(hwnd syscall.Handle) Rect

func GetWindowRect 

func GetWindowRect(hwnd syscall.Handle) Rect

type WindowPlacement 

type WindowPlacement struct {
	// contains filtered or unexported fields
}

func GetWindowPlacement 

func GetWindowPlacement(hwnd syscall.Handle) *WindowPlacement

func (WindowPlacement) IsMaximized 

func (p WindowPlacement) IsMaximized() bool

func (WindowPlacement) IsMinimized 

func (p WindowPlacement) IsMinimized() bool

func (WindowPlacement) Rect 

func (p WindowPlacement) Rect() Rect

func (*WindowPlacement) Set 

func (p *WindowPlacement) Set(Left, Top, Right, Bottom int)

type WindowPos 

type WindowPos struct {
	HWND            syscall.Handle
	HWNDInsertAfter syscall.Handle
	// contains filtered or unexported fields
}

type WndClassEx 

type WndClassEx struct {
	CbSize        uint32
	Style         uint32
	LpfnWndProc   uintptr
	CnClsExtra    int32
	CbWndExtra    int32
	HInstance     syscall.Handle
	HIcon         syscall.Handle
	HCursor       syscall.Handle
	HbrBackground syscall.Handle
	LpszMenuName  *uint16
	LpszClassName *uint16
	HIconSm       syscall.Handle
}

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.