mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-26 11:48:55 +01:00
80 lines
2.2 KiB
Go
80 lines
2.2 KiB
Go
// Copyright 2017 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build !ebitencbackend
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// +build !ebitencbackend
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package ui
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import (
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"fmt"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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const (
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processQueryLimitedInformation = 0x1000
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)
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var (
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kernel32 = windows.NewLazySystemDLL("kernel32.dll")
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user32 = windows.NewLazySystemDLL("user32.dll")
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procFreeConsoleWindow = kernel32.NewProc("FreeConsole")
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procGetCurrentProcessId = kernel32.NewProc("GetCurrentProcessId")
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procGetConsoleWindow = kernel32.NewProc("GetConsoleWindow")
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procGetWindowThreadProcessId = user32.NewProc("GetWindowThreadProcessId")
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)
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func freeConsole() error {
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r, _, e := procFreeConsoleWindow.Call()
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if int32(r) == 0 {
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if e != nil && e != windows.ERROR_SUCCESS {
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return fmt.Errorf("ui: FreeConsole failed: %w", e)
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}
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return fmt.Errorf("ui: FreeConsole returned 0")
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}
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return nil
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}
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func getCurrentProcessId() uint32 {
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r, _, _ := procGetCurrentProcessId.Call()
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return uint32(r)
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}
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func getConsoleWindow() windows.HWND {
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r, _, _ := procGetConsoleWindow.Call()
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return windows.HWND(r)
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}
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func getWindowThreadProcessId(hwnd windows.HWND) (tid, pid uint32) {
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r, _, _ := procGetWindowThreadProcessId.Call(uintptr(hwnd), uintptr(unsafe.Pointer(&pid)))
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tid = uint32(r)
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return
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}
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// hideConsoleWindowOnWindows will hide the console window that is showing when
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// compiling on Windows without specifying the '-ldflags "-Hwindowsgui"' flag.
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func hideConsoleWindowOnWindows() {
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pid := getCurrentProcessId()
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// Get the process ID of the console's creator.
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_, cpid := getWindowThreadProcessId(getConsoleWindow())
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if pid == cpid {
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// The current process created its own console. Hide this.
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// Ignore error.
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freeConsole()
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}
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}
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