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Win32: Simplify window class handling

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By using window class atoms, we only need to mention each window class
name once, also removing the need to define _GLFW_WNDCLASSNAME.  It can
still be defined by the user as before.
This commit is contained in:
Camilla Löwy 2022-05-06 17:58:42 +02:00
parent 2ae3e0c8d7
commit a465c1c32e
3 changed files with 43 additions and 61 deletions
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17
src/win32_init.c
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@ -378,7 +378,8 @@ static GLFWbool createHelperWindow(void)
wc.hInstance = _glfw.win32.instance;
wc.lpszClassName = L"GLFW3 Helper";
if (!RegisterClassExW(&wc))
_glfw.win32.helperWindowClass = RegisterClassExW(&wc);
if (!_glfw.win32.helperWindowClass)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"WIn32: Failed to register helper window class");
@ -387,7 +388,7 @@ static GLFWbool createHelperWindow(void)
_glfw.win32.helperWindowHandle =
CreateWindowExW(WS_EX_OVERLAPPEDWINDOW,
L"GLFW3 Helper",
MAKEINTATOM(_glfw.win32.helperWindowClass),
L"GLFW message window",
WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
0, 0, 1, 1,
@ -695,9 +696,6 @@ int _glfwInitWin32(void)
else if (IsWindowsVistaOrGreater())
SetProcessDPIAware();
if (!_glfwRegisterWindowClassWin32())
return GLFW_FALSE;
if (!createHelperWindow())
return GLFW_FALSE;
@ -711,12 +709,11 @@ void _glfwTerminateWin32(void)
UnregisterDeviceNotification(_glfw.win32.deviceNotificationHandle);
if (_glfw.win32.helperWindowHandle)
{
DestroyWindow(_glfw.win32.helperWindowHandle);
UnregisterClassW(L"GLFW3 Helper", _glfw.win32.instance);
}
_glfwUnregisterWindowClassWin32();
if (_glfw.win32.helperWindowClass)
UnregisterClassW(MAKEINTATOM(_glfw.win32.helperWindowClass), _glfw.win32.instance);
if (_glfw.win32.mainWindowClass)
UnregisterClassW(MAKEINTATOM(_glfw.win32.mainWindowClass), _glfw.win32.instance);
_glfw_free(_glfw.win32.clipboardString);
_glfw_free(_glfw.win32.rawInput);

9
src/win32_platform.h
View File

@ -358,10 +358,6 @@ typedef struct VkWin32SurfaceCreateInfoKHR
typedef VkResult (APIENTRY *PFN_vkCreateWin32SurfaceKHR)(VkInstance,const VkWin32SurfaceCreateInfoKHR*,const VkAllocationCallbacks*,VkSurfaceKHR*);
typedef VkBool32 (APIENTRY *PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR)(VkPhysicalDevice,uint32_t);
#if !defined(_GLFW_WNDCLASSNAME)
#define _GLFW_WNDCLASSNAME L"GLFW30"
#endif
#define GLFW_WIN32_WINDOW_STATE _GLFWwindowWin32 win32;
#define GLFW_WIN32_LIBRARY_WINDOW_STATE _GLFWlibraryWin32 win32;
#define GLFW_WIN32_MONITOR_STATE _GLFWmonitorWin32 win32;
@ -444,6 +440,8 @@ typedef struct _GLFWlibraryWin32
{
HINSTANCE instance;
HWND helperWindowHandle;
ATOM helperWindowClass;
ATOM mainWindowClass;
HDEVNOTIFY deviceNotificationHandle;
int acquiredMonitorCount;
char* clipboardString;
@ -527,9 +525,6 @@ GLFWbool _glfwConnectWin32(int platformID, _GLFWplatform* platform);
int _glfwInitWin32(void);
void _glfwTerminateWin32(void);
GLFWbool _glfwRegisterWindowClassWin32(void);
void _glfwUnregisterWindowClassWin32(void);
WCHAR* _glfwCreateWideStringFromUTF8Win32(const char* source);
char* _glfwCreateUTF8FromWideStringWin32(const WCHAR* source);
BOOL _glfwIsWindowsVersionOrGreaterWin32(WORD major, WORD minor, WORD sp);

78
src/win32_window.c
View File

@ -1249,6 +1249,39 @@ static int createNativeWindow(_GLFWwindow* window,
DWORD style = getWindowStyle(window);
DWORD exStyle = getWindowExStyle(window);
if (!_glfw.win32.mainWindowClass)
{
WNDCLASSEXW wc = { sizeof(wc) };
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wc.lpfnWndProc = windowProc;
wc.hInstance = _glfw.win32.instance;
wc.hCursor = LoadCursorW(NULL, IDC_ARROW);
#if defined(_GLFW_WNDCLASSNAME)
wc.lpszClassName = _GLFW_WNDCLASSNAME;
#else
wc.lpszClassName = L"GLFW30";
#endif
// Load user-provided icon if available
wc.hIcon = LoadImageW(GetModuleHandleW(NULL),
L"GLFW_ICON", IMAGE_ICON,
0, 0, LR_DEFAULTSIZE | LR_SHARED);
if (!wc.hIcon)
{
// No user-provided icon found, load default icon
wc.hIcon = LoadImageW(NULL,
IDI_APPLICATION, IMAGE_ICON,
0, 0, LR_DEFAULTSIZE | LR_SHARED);
}
_glfw.win32.mainWindowClass = RegisterClassExW(&wc);
if (!_glfw.win32.mainWindowClass)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to register window class");
return GLFW_FALSE;
}
}
if (window->monitor)
{
MONITORINFO mi = { sizeof(mi) };
@ -1282,7 +1315,7 @@ static int createNativeWindow(_GLFWwindow* window,
return GLFW_FALSE;
window->win32.handle = CreateWindowExW(exStyle,
_GLFW_WNDCLASSNAME,
MAKEINTATOM(_glfw.win32.mainWindowClass),
wideTitle,
style,
xpos, ypos,
@ -1387,49 +1420,6 @@ static int createNativeWindow(_GLFWwindow* window,
return GLFW_TRUE;
}
// Registers the GLFW window class
//
GLFWbool _glfwRegisterWindowClassWin32(void)
{
WNDCLASSEXW wc;
ZeroMemory(&wc, sizeof(wc));
wc.cbSize = sizeof(wc);
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wc.lpfnWndProc = windowProc;
wc.hInstance = _glfw.win32.instance;
wc.hCursor = LoadCursorW(NULL, IDC_ARROW);
wc.lpszClassName = _GLFW_WNDCLASSNAME;
// Load user-provided icon if available
wc.hIcon = LoadImageW(GetModuleHandleW(NULL),
L"GLFW_ICON", IMAGE_ICON,
0, 0, LR_DEFAULTSIZE | LR_SHARED);
if (!wc.hIcon)
{
// No user-provided icon found, load default icon
wc.hIcon = LoadImageW(NULL,
IDI_APPLICATION, IMAGE_ICON,
0, 0, LR_DEFAULTSIZE | LR_SHARED);
}
if (!RegisterClassExW(&wc))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to register window class");
return GLFW_FALSE;
}
return GLFW_TRUE;
}
// Unregisters the GLFW window class
//
void _glfwUnregisterWindowClassWin32(void)
{
UnregisterClassW(_GLFW_WNDCLASSNAME, _glfw.win32.instance);
}
GLFWbool _glfwCreateWindowWin32(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWctxconfig* ctxconfig,