internal/glfwwin: add a build tag microsoftgdk

Updates #1162

internal/glfwwin/api_windows.go

@@ -1,4 +1,4 @@
-// Copyright 2022 The Ebiten Authors
+// 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.
@@ -1133,10 +1133,6 @@ func _EnumDisplayDevicesW(device string, iDevNum uint32, dwFlags uint32) (_DISPL
 	return displayDevice, true
 }
 
-func _EnumDisplayDevicesW_Available() bool {
-	return procEnumDisplayDevicesW.Find() == nil
-}
-
 func _EnumDisplayMonitors(hdc _HDC, lprcClip *_RECT, lpfnEnum uintptr, dwData _LPARAM) error {
 	r, _, e := procEnumDisplayMonitors.Call(uintptr(hdc), uintptr(unsafe.Pointer(lprcClip)), uintptr(lpfnEnum), uintptr(dwData))
 	if int32(r) == 0 {
@@ -1395,19 +1391,11 @@ func _LoadImageW(hInst _HINSTANCE, name uintptr, typ uint32, cx int32, cy int32,
 	return windows.Handle(r), nil
 }
 
-func _LoadImageW_Available() bool {
-	return procLoadImageW.Find() == nil
-}
-
 func _MapVirtualKeyW(uCode uint32, uMapType uint32) uint32 {
 	r, _, _ := procMapVirtualKeyW.Call(uintptr(uCode), uintptr(uMapType))
 	return uint32(r)
 }
 
-func _MapVirtualKeyW_Available() bool {
-	return procMapVirtualKeyW.Find() == nil
-}
-
 func _MonitorFromWindow(hwnd windows.HWND, dwFlags uint32) _HMONITOR {
 	r, _, _ := procMonitorFromWindow.Call(uintptr(hwnd), uintptr(dwFlags))
 	return _HMONITOR(r)
@@ -1489,10 +1477,6 @@ func _RegisterDeviceNotificationW(hRecipient windows.Handle, notificationFilter
 	return _HDEVNOTIFY(r), nil
 }
 
-func _RegisterDeviceNotificationW_Available() bool {
-	return procRegisterDeviceNotificationW.Find() == nil
-}
-
 func _RegisterRawInputDevices(pRawInputDevices []_RAWINPUTDEVICE) error {
 	r, _, e := procRegisterRawInputDevices.Call(uintptr(unsafe.Pointer(&pRawInputDevices[0])), uintptr(len(pRawInputDevices)), unsafe.Sizeof(pRawInputDevices[0]))
 	if int32(r) == 0 {
@@ -1629,10 +1613,6 @@ func _SetProcessDpiAwarenessContext(value _DPI_AWARENESS_CONTEXT) error {
 	return nil
 }
 
-func _SetProcessDpiAwarenessContext_Available() bool {
-	return procSetProcessDpiAwarenessContext.Find() == nil
-}
-
 func _SetThreadExecutionState(esFlags _EXECUTION_STATE) _EXECUTION_STATE {
 	r, _, _ := procSetThreadExecutionState.Call(uintptr(esFlags))
 	return _EXECUTION_STATE(r)

internal/glfwwin/microsoftgdk_windows.go

@@ -0,0 +1,50 @@
+// 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 microsoftgdk
+// +build microsoftgdk
+
+package glfwwin
+
+// This file does not include the headers of Microsoft GDK in order to compile easier.
+// In order to compile this, create a dummy DLL with empty implementations like below,
+// and link it.
+//
+//     #include <stdint.h>
+//     __declspec(dllexport) __cdecl uint32_t XSystemGetDeviceType(void) {
+//       return 0;
+//     }
+//
+// Unfortunately, some functions like XSystemGetDeviceType is not implemented in a DLL,
+// so LoadLibrary is not available.
+
+// typedef enum {
+//    Unknown              = 0x00,
+//    Pc                   = 0x01,
+//    XboxOne              = 0x02,
+//    XboxOneS             = 0x03,
+//    XboxOneX             = 0x04,
+//    XboxOneXDevkit       = 0x05,
+//    XboxScarlettLockhart = 0x06,
+//    XboxScarlettAnaconda = 0x07,
+//    XboxScarlettDevkit   = 0x08,
+// } XSystemDeviceType;
+//
+// XSystemDeviceType XSystemGetDeviceType(void);
+import "C"
+
+func isXbox() bool {
+	t := C.XSystemGetDeviceType()
+	return t != C.Unknown && t != C.Pc
+}

internal/glfwwin/notmicrosoftgdk_windows.go

@@ -0,0 +1,22 @@
+// 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 !microsoftgdk
+// +build !microsoftgdk
+
+package glfwwin
+
+func isXbox() bool {
+	return false
+}

internal/glfwwin/win32init_windows.go

@@ -168,7 +168,7 @@ func createHelperWindow() error {
 	_ShowWindow(_glfw.win32.helperWindowHandle, _SW_HIDE)
 
 	// Register for HID device notifications
-	if _RegisterDeviceNotificationW_Available() {
+	if !isXbox() {
 		_GUID_DEVINTERFACE_HID := windows.GUID{
 			Data1: 0x4d1e55b2,
 			Data2: 0xf16f,
@@ -238,7 +238,7 @@ func platformInit() error {
 	createKeyTables()
 
 	if isWindows10CreatorsUpdateOrGreaterWin32() {
-		if _SetProcessDpiAwarenessContext_Available() {
+		if !isXbox() {
 			if err := _SetProcessDpiAwarenessContext(_DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2); err != nil && !errors.Is(err, windows.ERROR_ACCESS_DENIED) {
 				return err
 			}
@@ -258,8 +258,14 @@ func platformInit() error {
 	if err := createHelperWindow(); err != nil {
 		return err
 	}
-	if err := pollMonitorsWin32(); err != nil {
+	if isXbox() {
-		return err
+		// TODO: Create a dummy window.
+		// The resolution can be deterined based on a device.
+		// See https://github.com/microsoft/Xbox-GDK-Samples/blob/1f44bdabed6e340170e2c7d1007500e4dff897bb/Samples/IntroGraphics/SimpleDynamicResources/Main.cpp#L118-L148
+	} else {
+		if err := pollMonitorsWin32(); err != nil {
+			return err
+		}
 	}
 	return nil
 }

internal/glfwwin/win32monitor_windows.go

@@ -66,7 +66,7 @@ func createMonitor(adapter *_DISPLAY_DEVICEW, display *_DISPLAY_DEVICEW) (*Monit
 }
 
 func pollMonitorsWin32() error {
-	if !_EnumDisplayDevicesW_Available() {
+	if isXbox() {
 		return nil
 	}
 

internal/glfwwin/win32window_windows.go

@@ -714,7 +714,7 @@ func windowProc(hWnd windows.HWND, uMsg uint32, wParam _WPARAM, lParam _LPARAM)
 
 		scancode := uint32((_HIWORD(uint32(lParam)) & (_KF_EXTENDED | 0xff)))
 		if scancode == 0 {
-			if !_MapVirtualKeyW_Available() {
+			if isXbox() {
 				break
 			}
 			// NOTE: Some synthetic key messages have a scancode of zero
@@ -1337,7 +1337,7 @@ func registerWindowClassWin32() error {
 	// In the original GLFW implementation, an embedded resource GLFW_ICON is used if possible.
 	// See https://www.glfw.org/docs/3.3/group__window.html
 
-	if _LoadImageW_Available() {
+	if !isXbox() {
 		icon, err := _LoadImageW(0, _IDI_APPLICATION, _IMAGE_ICON, 0, 0, _LR_DEFAULTSIZE|_LR_SHARED)
 		if err != nil {
 			return err
@@ -2123,7 +2123,7 @@ func (c *Cursor) platformCreateCursor(image *Image, xhot, yhot int) error {
 }
 
 func (c *Cursor) platformCreateStandardCursor(shape StandardCursor) error {
-	if !_LoadImageW_Available() {
+	if isXbox() {
 		return nil
 	}