68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
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#include "directx_util.hpp"
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#include <stdexcept>
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#include <string>
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namespace Basalt::Shared::DirectX {
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// Window procedure for the render window
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LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
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switch (msg) {
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case WM_CLOSE:
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PostQuitMessage(0);
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return 0;
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default:
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break;
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}
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return DefWindowProcW(hwnd, msg, wParam, lParam);
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}
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// Create a render window for DirectX
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HWND CreateRenderWindow(std::uint32_t width, std::uint32_t height, const std::wstring_view& title) {
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static bool g_CLSREG = false;
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constexpr wchar_t class_name[] = L"DirectXRenderWindowClass";
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std::wstring c_title(title);
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if (!g_CLSREG) {
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WNDCLASSEXW wc = {0};
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wc.cbSize = sizeof(WNDCLASSEXW);
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wc.style = CS_HREDRAW | CS_VREDRAW;
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wc.lpfnWndProc = WndProc;
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wc.hInstance = GetModuleHandleW(nullptr);
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wc.hCursor = LoadCursorW(nullptr, IDC_ARROW);
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wc.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1);
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wc.lpszClassName = class_name;
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if (!RegisterClassExW(&wc)) {
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throw std::runtime_error("Failed to register window class");
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}
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g_CLSREG = true;
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}
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// Calculate window size including borders
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RECT rect = {0, 0, static_cast<LONG>(width), static_cast<LONG>(height)};
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AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, FALSE);
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HWND hwnd = CreateWindowExW(0,
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class_name,
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c_title.c_str(),
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WS_OVERLAPPEDWINDOW,
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CW_USEDEFAULT,
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CW_USEDEFAULT,
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rect.right - rect.left,
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rect.bottom - rect.top,
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nullptr,
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nullptr,
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GetModuleHandleW(nullptr),
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nullptr);
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if (!hwnd) {
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throw std::runtime_error("Failed to create render window");
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}
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ShowWindow(hwnd, SW_SHOW);
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UpdateWindow(hwnd);
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return hwnd;
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}
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}
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