user32

Documentation

Index

• Constants
• Variables
• func GetActiveWindowN() (hwnd *unsafe.Pointer, err error)
• func GetForegroundWindowN() (hwnd *unsafe.Pointer, err error)
• func GetParentN(handle *unsafe.Pointer) (hParentWnd *unsafe.Pointer, err error)
• func ShowWindowN(handle *unsafe.Pointer, CmdShow int) (visible bool, err error)

Constants

const (
	SW_HIDE            int = iota // Hides the window and activates another window.
	SW_SHOWNORMAL                 // Activates and displays a window. If the window is minimized or maximized, the system restores it to its original size and position. An application should specify this flag when displaying the window for the first time.
	SW_SHOWMINIMIZED              // Activates the window and displays it as a minimized window.
	SW_SHOWMAXIMIZED              // Activates the window and displays it as a maximized window.
	SW_SHOWNOACTIVATE             // Displays a window in its most recent size and position. This value is similar to SW_SHOWNORMAL, except that the window is not activated.
	SW_SHOW                       // Activates the window and displays it in its current size and position.
	SW_MINIMIZE                   // Minimizes the specified window and activates the next top-level window in the Z order.
	SW_SHOWMINNOACTIVE            // Displays the window as a minimized window. This value is similar to SW_SHOWMINIMIZED, except the window is not activated.
	SW_SHOWNA                     // Displays the window in its current size and position. This value is similar to SW_SHOW, except that the window is not activated.
	SW_RESTORE                    // Activates and displays the window. If the window is minimized or maximized, the system restores it to its original size and position. An application should specify this flag when restoring a minimized window.
	SW_SHOWDEFAULT                // Sets the show state based on the SW_ value specified in the STARTUPINFO structure passed to the CreateProcess function by the program that started the application.
	SW_FORCEMINIMIZE              // Minimizes a window, even if the thread that owns the window is not responding. This flag should only be used when minimizing windows from a different thread.
)

SW Show Window controls how the window is to be shown. This parameter is ignored the first time an application calls ShowWindow, if the program that launched the application provides a STARTUPINFO structure. Otherwise, the first time ShowWindow is called, the value should be the value obtained by the WinMain function in its nCmdShow parameter. https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-showwindow

const (
	STARTF_USESHOWWINDOW uint32 = 0x00000001 // The wShowWindow member contains additional information.
)

STARTF A bitfield that determines whether certain STARTUPINFO members are used when the process creates a window. https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/ns-processthreadsapi-startupinfow

Variables

var User32 = windows.NewLazySystemDLL("User32.dll")

Functions

func GetActiveWindowN

func GetActiveWindowN() (hwnd *unsafe.Pointer, err error)

GetActiveWindowN Retrieves the window handle to the active window attached to the calling thread's message queue. https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getactivewindow

func GetForegroundWindowN

func GetForegroundWindowN() (hwnd *unsafe.Pointer, err error)

GetForegroundWindowN Retrieves a handle to the foreground window (the window with which the user is currently working). The system assigns a slightly higher priority to the thread that creates the foreground window than it does to other threads. https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getforegroundwindow

func GetParentN

func GetParentN(handle *unsafe.Pointer) (hParentWnd *unsafe.Pointer, err error)

GetParentN Retrieves a handle to the specified window's parent or owner. https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getparent

func ShowWindowN

func ShowWindowN(handle *unsafe.Pointer, CmdShow int) (visible bool, err error)

ShowWindowN Sets the specified window's show state. The "N" in the function name is for Native as it avoids using external packages https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-showwindow