Function ImGui_ImplWin32_NewFrame

KBotExt/imgui/imgui_impl_win32.cpp:355–388

}

void    ImGui_ImplWin32_NewFrame()
{
	ImGuiIO& io = ImGui::GetIO();
	ImGui_ImplWin32_Data* bd = ImGui_ImplWin32_GetBackendData();
	IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplWin32_Init()?");

	// Setup display size (every frame to accommodate for window resizing)
	RECT rect = { 0, 0, 0, 0 };
	::GetClientRect(bd->hWnd, &rect);
	io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top));

	// Setup time step
	INT64 current_time = 0;
	::QueryPerformanceCounter((LARGE_INTEGER*)&current_time);
	io.DeltaTime = (float)(current_time - bd->Time) / bd->TicksPerSecond;
	bd->Time = current_time;

	// Update OS mouse position
	ImGui_ImplWin32_UpdateMouseData();

	// Process workarounds for known Windows key handling issues
	ImGui_ImplWin32_ProcessKeyEventsWorkarounds();

	// Update OS mouse cursor with the cursor requested by imgui
	ImGuiMouseCursor mouse_cursor = io.MouseDrawCursor ? ImGuiMouseCursor_None : ImGui::GetMouseCursor();
	if (bd->LastMouseCursor != mouse_cursor)
	{
		bd->LastMouseCursor = mouse_cursor;
		ImGui_ImplWin32_UpdateMouseCursor();
	}

	// Update game controllers (if enabled and available)
	ImGui_ImplWin32_UpdateGamepads();
}

// There is no distinct VK_xxx for keypad enter, instead it is VK_RETURN + KF_EXTENDED, we assign it an arbitrary value to make code more readable (VK_ codes go up to 255)
#define IM_VK_KEYPAD_ENTER      (VK_RETURN + 256)