mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 13:07:26 +01:00
100 lines
2.6 KiB
Go
100 lines
2.6 KiB
Go
// Copyright 2022 The Ebitengine Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
//go:build !ebitenginecbackend && !ebitencbackend
|
|
// +build !ebitenginecbackend,!ebitencbackend
|
|
|
|
package ui
|
|
|
|
import (
|
|
"fmt"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/windows"
|
|
)
|
|
|
|
const (
|
|
_SM_CYCAPTION = 4
|
|
_MONITOR_DEFAULTTONEAREST = 2
|
|
)
|
|
|
|
type _RECT struct {
|
|
left int32
|
|
top int32
|
|
right int32
|
|
bottom int32
|
|
}
|
|
|
|
type _MONITORINFO struct {
|
|
cbSize uint32
|
|
rcMonitor _RECT
|
|
rcWork _RECT
|
|
dwFlags uint32
|
|
}
|
|
|
|
type _POINT struct {
|
|
x int32
|
|
y int32
|
|
}
|
|
|
|
var (
|
|
user32 = windows.NewLazySystemDLL("user32.dll")
|
|
|
|
procGetSystemMetrics = user32.NewProc("GetSystemMetrics")
|
|
procMonitorFromWindow = user32.NewProc("MonitorFromWindow")
|
|
procGetMonitorInfoW = user32.NewProc("GetMonitorInfoW")
|
|
procGetCursorPos = user32.NewProc("GetCursorPos")
|
|
)
|
|
|
|
func _GetSystemMetrics(nIndex int) (int32, error) {
|
|
r, _, _ := procGetSystemMetrics.Call(uintptr(nIndex))
|
|
if int32(r) == 0 {
|
|
// GetLastError doesn't provide an extended information.
|
|
// See https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getsystemmetrics
|
|
return 0, fmt.Errorf("ui: GetSystemMetrics returned 0")
|
|
}
|
|
return int32(r), nil
|
|
}
|
|
|
|
func _MonitorFromWindow(hwnd windows.HWND, dwFlags uint32) uintptr {
|
|
r, _, _ := procMonitorFromWindow.Call(uintptr(hwnd), uintptr(dwFlags))
|
|
return r
|
|
}
|
|
|
|
func _GetMonitorInfoW(hMonitor uintptr) (_MONITORINFO, error) {
|
|
mi := _MONITORINFO{}
|
|
mi.cbSize = uint32(unsafe.Sizeof(mi))
|
|
|
|
r, _, e := procGetMonitorInfoW.Call(hMonitor, uintptr(unsafe.Pointer(&mi)))
|
|
if int32(r) == 0 {
|
|
if e != nil && e != windows.ERROR_SUCCESS {
|
|
return _MONITORINFO{}, fmt.Errorf("ui: GetMonitorInfoW failed: error code: %w", e)
|
|
}
|
|
return _MONITORINFO{}, fmt.Errorf("ui: GetMonitorInfoW failed: returned 0")
|
|
}
|
|
return mi, nil
|
|
}
|
|
|
|
func _GetCursorPos() (int32, int32, error) {
|
|
var pt _POINT
|
|
r, _, e := procGetCursorPos.Call(uintptr(unsafe.Pointer(&pt)))
|
|
if int32(r) == 0 {
|
|
if e != nil && e != windows.ERROR_SUCCESS {
|
|
return 0, 0, fmt.Errorf("ui: GetCursorPos failed: error code: %w", e)
|
|
}
|
|
return 0, 0, fmt.Errorf("ui: GetCursorPos failed: returned 0")
|
|
}
|
|
return pt.x, pt.y, nil
|
|
}
|