mirror of
https://github.com/wailsapp/wails.git
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138 lines
3.5 KiB
Go
138 lines
3.5 KiB
Go
package w32
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import (
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"fmt"
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"log"
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"strconv"
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"syscall"
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"unsafe"
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)
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const (
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GCLP_HBRBACKGROUND int32 = -10
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)
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func ExtendFrameIntoClientArea(hwnd uintptr, extend bool) {
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// -1: Adds the default frame styling (aero shadow and e.g. rounded corners on Windows 11)
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// Also shows the caption buttons if transparent ant translucent but they don't work.
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// 0: Adds the default frame styling but no aero shadow, does not show the caption buttons.
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// 1: Adds the default frame styling (aero shadow and e.g. rounded corners on Windows 11) but no caption buttons
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// are shown if transparent ant translucent.
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var margins MARGINS
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if extend {
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margins = MARGINS{1, 1, 1, 1} // Only extend 1 pixel to have the default frame styling but no caption buttons
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}
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if err := dwmExtendFrameIntoClientArea(hwnd, &margins); err != nil {
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log.Fatal(fmt.Errorf("DwmExtendFrameIntoClientArea failed: %s", err))
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}
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}
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func IsVisible(hwnd uintptr) bool {
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ret, _, _ := procIsWindowVisible.Call(hwnd)
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return ret != 0
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}
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func IsWindowFullScreen(hwnd uintptr) bool {
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wRect := GetWindowRect(hwnd)
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m := MonitorFromWindow(hwnd, MONITOR_DEFAULTTOPRIMARY)
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var mi MONITORINFO
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mi.CbSize = uint32(unsafe.Sizeof(mi))
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if !GetMonitorInfo(m, &mi) {
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return false
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}
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return wRect.Left == mi.RcMonitor.Left &&
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wRect.Top == mi.RcMonitor.Top &&
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wRect.Right == mi.RcMonitor.Right &&
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wRect.Bottom == mi.RcMonitor.Bottom
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}
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func IsWindowMaximised(hwnd uintptr) bool {
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style := uint32(getWindowLong(hwnd, GWL_STYLE))
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return style&WS_MAXIMIZE != 0
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}
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func IsWindowMinimised(hwnd uintptr) bool {
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style := uint32(getWindowLong(hwnd, GWL_STYLE))
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return style&WS_MINIMIZE != 0
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}
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func RestoreWindow(hwnd uintptr) {
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showWindow(hwnd, SW_RESTORE)
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}
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func ShowWindowMaximised(hwnd uintptr) {
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showWindow(hwnd, SW_MAXIMIZE)
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}
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func ShowWindowMinimised(hwnd uintptr) {
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showWindow(hwnd, SW_MINIMIZE)
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}
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func SetBackgroundColour(hwnd uintptr, r, g, b uint8) {
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col := uint32(r) | uint32(g)<<8 | uint32(b)<<16
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hbrush, _, _ := procCreateSolidBrush.Call(uintptr(col))
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setClassLongPtr(hwnd, GCLP_HBRBACKGROUND, hbrush)
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}
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func IsWindowNormal(hwnd uintptr) bool {
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return !IsWindowMaximised(hwnd) && !IsWindowMinimised(hwnd) && !IsWindowFullScreen(hwnd)
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}
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func setClassLongPtr(hwnd uintptr, param int32, val uintptr) bool {
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proc := procSetClassLongPtr
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if strconv.IntSize == 32 {
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/*
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https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-setclasslongptrw
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Note: To write code that is compatible with both 32-bit and 64-bit Windows, use SetClassLongPtr.
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When compiling for 32-bit Windows, SetClassLongPtr is defined as a call to the SetClassLong function
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=> We have to do this dynamically when directly calling the DLL procedures
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*/
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proc = procSetClassLong
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}
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ret, _, _ := proc.Call(
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hwnd,
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uintptr(param),
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val,
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)
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return ret != 0
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}
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func getWindowLong(hwnd uintptr, index int) int32 {
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ret, _, _ := procGetWindowLong.Call(
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hwnd,
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uintptr(index))
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return int32(ret)
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}
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func showWindow(hwnd uintptr, cmdshow int) bool {
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ret, _, _ := procShowWindow.Call(
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hwnd,
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uintptr(cmdshow))
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return ret != 0
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}
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func MustStringToUTF16Ptr(input string) *uint16 {
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ret, err := syscall.UTF16PtrFromString(input)
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if err != nil {
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panic(err)
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}
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return ret
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}
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func MustStringToUTF16uintptr(input string) uintptr {
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ret, err := syscall.UTF16PtrFromString(input)
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if err != nil {
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panic(err)
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}
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return uintptr(unsafe.Pointer(ret))
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}
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func MustUTF16FromString(input string) []uint16 {
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ret, err := syscall.UTF16FromString(input)
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if err != nil {
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panic(err)
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}
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return ret
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}
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