1 files changed, 28 insertions, 0 deletions
diff --git a/src/win/native/window_class.cpp b/src/win/native/window_class.cpp
new file mode 100644
index 00000000..6c7d0d3d
--- /dev/null
+++ b/src/win/native/window_class.cpp
@@ -0,0 +1,28 @@
+#include "cru/win/native/window_class.hpp"
+
+#include "cru/win/exception.hpp"
+
+namespace cru::win::native {
+WindowClass::WindowClass(const std::wstring& name, WNDPROC window_proc,
+                         HINSTANCE h_instance)
+    : name_(name) {
+  WNDCLASSEXW window_class;
+  window_class.cbSize = sizeof(WNDCLASSEXW);
+
+  window_class.style = CS_HREDRAW | CS_VREDRAW;
+  window_class.lpfnWndProc = window_proc;
+  window_class.cbClsExtra = 0;
+  window_class.cbWndExtra = 0;
+  window_class.hInstance = h_instance;
+  window_class.hIcon = LoadIcon(NULL, IDI_APPLICATION);
+  window_class.hCursor = LoadCursor(NULL, IDC_ARROW);
+  window_class.hbrBackground = GetSysColorBrush(COLOR_BTNFACE);
+  window_class.lpszMenuName = NULL;
+  window_class.lpszClassName = name.c_str();
+  window_class.hIconSm = NULL;
+
+  atom_ = ::RegisterClassExW(&window_class);
+  if (atom_ == 0)
+    throw Win32Error(::GetLastError(), "Failed to create window class.");
+}
+}  // namespace cru::win::native