set_mouse_cursor via SetCursor API

Author: discordance

src/win/cursor.rs

@@ -0,0 +1,38 @@
+use winapi::{
+    shared::ntdef::PCWSTR,
+    um::winuser::{
+        IDC_ARROW, IDC_CROSS, IDC_HAND, IDC_HELP, IDC_IBEAM, IDC_NO, IDC_SIZEALL, IDC_WAIT,
+    },
+};
+
+use crate::MouseCursor;
+
+impl MouseCursor {
+    pub(crate) fn to_windows_cursor(self) -> PCWSTR {
+        match self {
+            MouseCursor::Default => IDC_ARROW,
+            MouseCursor::Hand | MouseCursor::Pointer => IDC_HAND,
+            MouseCursor::HandGrabbing
+            | MouseCursor::Move
+            | MouseCursor::ZoomIn
+            | MouseCursor::ZoomOut
+            | MouseCursor::AllScroll => IDC_SIZEALL,
+            MouseCursor::Help => IDC_HELP,
+            MouseCursor::Text | MouseCursor::VerticalText => IDC_IBEAM,
+            MouseCursor::Working | MouseCursor::PtrWorking => IDC_WAIT,
+            MouseCursor::NotAllowed | MouseCursor::PtrNotAllowed => IDC_NO,
+            MouseCursor::Crosshair => IDC_CROSS,
+            MouseCursor::EResize
+            | MouseCursor::WResize
+            | MouseCursor::EwResize
+            | MouseCursor::ColResize => IDC_SIZEALL,
+            MouseCursor::NResize
+            | MouseCursor::SResize
+            | MouseCursor::NsResize
+            | MouseCursor::RowResize => IDC_SIZEALL,
+            MouseCursor::NeResize | MouseCursor::SwResize | MouseCursor::NeswResize => IDC_SIZEALL,
+            MouseCursor::NwResize | MouseCursor::SeResize | MouseCursor::NwseResize => IDC_SIZEALL,
+            _ => IDC_ARROW,
+        }
+    }
+}

src/win/mod.rs

@@ -1,4 +1,5 @@
 mod keyboard;
 mod window;
+mod cursor;
 
 pub use window::*;

src/win/window.rs

@@ -2,18 +2,9 @@ use winapi::shared::guiddef::GUID;
 use winapi::shared::minwindef::{ATOM, FALSE, LPARAM, LRESULT, UINT, WPARAM};
 use winapi::shared::windef::{HWND, RECT};
 use winapi::um::combaseapi::CoCreateGuid;
-use winapi::um::winuser::{
-    AdjustWindowRectEx, CreateWindowExW, DefWindowProcW, DestroyWindow, DispatchMessageW,
-    GetDpiForWindow, GetMessageW, GetWindowLongPtrW, LoadCursorW, PostMessageW, RegisterClassW,
-    ReleaseCapture, SetCapture, SetProcessDpiAwarenessContext, SetTimer, SetWindowLongPtrW,
-    SetWindowPos, TranslateMessage, UnregisterClassW, CS_OWNDC, GET_XBUTTON_WPARAM, GWLP_USERDATA,
-    IDC_ARROW, MSG, SWP_NOMOVE, SWP_NOZORDER, WHEEL_DELTA, WM_CHAR, WM_CLOSE, WM_CREATE,
-    WM_DPICHANGED, WM_INPUTLANGCHANGE, WM_KEYDOWN, WM_KEYUP, WM_LBUTTONDOWN, WM_LBUTTONUP,
-    WM_MBUTTONDOWN, WM_MBUTTONUP, WM_MOUSEMOVE, WM_MOUSEWHEEL, WM_NCDESTROY, WM_RBUTTONDOWN,
-    WM_RBUTTONUP, WM_SHOWWINDOW, WM_SIZE, WM_SYSCHAR, WM_SYSKEYDOWN, WM_SYSKEYUP, WM_TIMER,
-    WM_USER, WM_XBUTTONDOWN, WM_XBUTTONUP, WNDCLASSW, WS_CAPTION, WS_CHILD, WS_CLIPSIBLINGS,
-    WS_MAXIMIZEBOX, WS_MINIMIZEBOX, WS_POPUPWINDOW, WS_SIZEBOX, WS_VISIBLE, XBUTTON1, XBUTTON2,
-};
+use winapi::um::winuser::{AdjustWindowRectEx, CreateWindowExW, DefWindowProcW, DestroyWindow, DispatchMessageW, GetDpiForWindow, GetMessageW, GetWindowLongPtrW, LoadCursorW, PostMessageW, RegisterClassW, ReleaseCapture, SetCapture, SetProcessDpiAwarenessContext, SetTimer, SetWindowLongPtrW, SetWindowPos, TranslateMessage, UnregisterClassW, CS_OWNDC, GET_XBUTTON_WPARAM, GWLP_USERDATA, IDC_ARROW, MSG, SWP_NOMOVE, SWP_NOZORDER, WHEEL_DELTA, WM_CHAR, WM_CLOSE, WM_CREATE, WM_DPICHANGED, WM_INPUTLANGCHANGE, WM_KEYDOWN, WM_KEYUP, WM_LBUTTONDOWN, WM_LBUTTONUP, WM_MBUTTONDOWN, WM_MBUTTONUP, WM_MOUSEMOVE, WM_MOUSEWHEEL, WM_NCDESTROY, WM_RBUTTONDOWN, WM_RBUTTONUP, WM_SHOWWINDOW, WM_SIZE, WM_SYSCHAR, WM_SYSKEYDOWN, WM_SYSKEYUP, WM_TIMER, WM_USER, WM_XBUTTONDOWN, WM_XBUTTONUP, WNDCLASSW, WS_CAPTION, WS_CHILD, WS_CLIPSIBLINGS, WS_MAXIMIZEBOX, WS_MINIMIZEBOX, WS_POPUPWINDOW, WS_SIZEBOX, WS_VISIBLE, XBUTTON1, XBUTTON2, SetCursor};
+
+
 
 use std::cell::RefCell;
 use std::ffi::{c_void, OsStr};
@@ -29,7 +20,7 @@ const BV_WINDOW_MUST_CLOSE: UINT = WM_USER + 1;
 
 use crate::{
     Event, MouseButton, MouseEvent, PhyPoint, PhySize, ScrollDelta, WindowEvent, WindowHandler,
-    WindowInfo, WindowOpenOptions, WindowScalePolicy,
+    WindowInfo, WindowOpenOptions, WindowScalePolicy, MouseCursor,
 };
 
 use super::keyboard::KeyboardState;
@@ -350,7 +341,7 @@ unsafe fn register_wnd_class() -> ATOM {
         cbClsExtra: 0,
         cbWndExtra: 0,
         hIcon: null_mut(),
-        hCursor: LoadCursorW(null_mut(), IDC_ARROW),
+        hCursor: null_mut(), // If the class cursor is not NULL, the system restores the class cursor each time the mouse is moved.
         hbrBackground: null_mut(),
         lpszMenuName: null_mut(),
     };
@@ -602,7 +593,10 @@ impl Window {
     }
 
     pub fn set_mouse_cursor(&mut self, cursor: MouseCursor) {
-        //@TODO: Implement
+        unsafe {
+            let cursor = LoadCursorW(null_mut(), cursor.to_windows_cursor());
+            SetCursor(cursor);
+        }
     }
 
     pub fn close(&mut self) {