查看窗口名 调用dll setForegroundWindow
2024-10-19 04:02:45
package main import (
"fmt"
"log"
"syscall"
"unsafe"
) var (
user32 = syscall.MustLoadDLL("user32.dll")
procEnumWindows = user32.MustFindProc("EnumWindows")
procGetWindowTextW = user32.MustFindProc("GetWindowTextW")
) func EnumWindows(enumFunc uintptr, lparam uintptr) (err error) {
r1, _, e1 := syscall.Syscall(procEnumWindows.Addr(), 2, uintptr(enumFunc), uintptr(lparam), 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
} func GetWindowText(hwnd syscall.Handle, str *uint16, maxCount int32) (len int32, err error) {
r0, _, e1 := syscall.Syscall(procGetWindowTextW.Addr(), 3, uintptr(hwnd), uintptr(unsafe.Pointer(str)), uintptr(maxCount))
len = int32(r0)
if len == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
} func FindWindow(title string) (syscall.Handle, error) {
var hwnd syscall.Handle
cb := syscall.NewCallback(func(h syscall.Handle, p uintptr) uintptr {
b := make([]uint16, 200)
_, err := GetWindowText(h, &b[0], int32(len(b)))
if err != nil {
// ignore the error
return 1 // continue enumeration
}
fmt.Printf("%s\n", syscall.UTF16ToString(b)) if syscall.UTF16ToString(b) == title {
// note the window
hwnd = h
return 0 // stop enumeration
}
return 1 // continue enumeration
})
EnumWindows(cb, 0)
if hwnd == 0 {
return 0, fmt.Errorf("No window with title '%s' found", title)
}
return hwnd, nil
} func main() {
//const title = "OpenTTD"
//const title = "FileZilla FTP Client"
const title = "OpenTTD"
h, err := FindWindow(title)
if err != nil {
log.Fatal(err)
}
fmt.Printf("Found '%s' window: handle=0x%x\n", title, h)
}
Go/Golang Trying to get window information via syscall. (As in EnumWindows, etc.) - Stack Overflow - Google Chrome
任务管理器
OpenTTD 1.3.0
openttd.exe 属性
filezilla.exe 属性
OfficePowerManagerWindow
game_manager [Y:\dev\game_manager] - C:\Go\src\os\exec\exec.go - GoLand
CandidateWindow
Mode Indicator
Mode Indicator
电池指示器
Network Flyout
Mode Indicator
Mode Indicator
go_win_api [Y:\dev\go_win_api] - ...\m.go - GoLand
OpenTTD 1.3.0
Found 'OpenTTD 1.3.0' window: handle=0x610d6
CandidateWindow
Mode Indicator
Mode Indicator
电池指示器
Network Flyout
Mode Indicator
Mode Indicator
go_win_api [Y:\dev\go_win_api] - ...\m.go - GoLand
OpenTTD 1.3.0
Get Retrun Value Before setForegroundWindow Invoked: %!s(uintptr=1)
package main import (
"fmt"
"log"
"syscall"
"unsafe"
) var (
user32 = syscall.MustLoadDLL("user32.dll")
procEnumWindows = user32.MustFindProc("EnumWindows")
procGetWindowTextW = user32.MustFindProc("GetWindowTextW")
user32_b, _ = syscall.LoadLibrary("user32.dll")
setForegroundWindow, _ = syscall.GetProcAddress(user32_b, "SetForegroundWindow")
) func EnumWindows(enumFunc uintptr, lparam uintptr) (err error) {
r1, _, e1 := syscall.Syscall(procEnumWindows.Addr(), 2, uintptr(enumFunc), uintptr(lparam), 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
} func GetWindowText(hwnd syscall.Handle, str *uint16, maxCount int32) (len int32, err error) {
r0, _, e1 := syscall.Syscall(procGetWindowTextW.Addr(), 3, uintptr(hwnd), uintptr(unsafe.Pointer(str)), uintptr(maxCount))
len = int32(r0)
if len == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
} func FindWindow(title string) (syscall.Handle, error) {
var hwnd syscall.Handle
cb := syscall.NewCallback(func(h syscall.Handle, p uintptr) uintptr {
b := make([]uint16, 200)
_, err := GetWindowText(h, &b[0], int32(len(b)))
if err != nil {
// ignore the error
return 1 // continue enumeration
}
fmt.Printf("%s\n", syscall.UTF16ToString(b)) if syscall.UTF16ToString(b) == title {
// note the window
hwnd = h
return 0 // stop enumeration
}
return 1 // continue enumeration
})
EnumWindows(cb, 0)
if hwnd == 0 {
return 0, fmt.Errorf("No window with title '%s' found", title)
}
return hwnd, nil
} func IntPtr(n int) uintptr {
return uintptr(n)
} func abort(funcname string, err syscall.Errno) {
panic(funcname + " failed: " + err.Error())
} func main() {
//const title = "OpenTTD"
//const title = "FileZilla FTP Client"
const title = "OpenTTD 1.3.0"
h, err := FindWindow(title)
if err != nil {
log.Fatal(err)
}
fmt.Printf("Found '%s' window: handle=0x%x\n", title, h) h, err = FindWindow(title)
if err != nil {
log.Fatal(err)
} ret, _, callErr := syscall.Syscall(setForegroundWindow, 1, uintptr(h), IntPtr(0), IntPtr(0))
if callErr != 0 {
abort("Call setForegroundWindow", callErr)
}
fmt.Printf("Get Retrun Value Before setForegroundWindow Invoked: %s\n", ret)
}
https://github.com/golang/go/wiki/WindowsDLLs
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