CreateWindowEx创建有边框和无边框窗口

无边框窗口

m_hwnd = CreateWindowEx(WS_EX_APPWINDOW, m_applicationName, m_applicationName,WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_POPUP,posX, posY, screenWidth, screenHeight, NULL, NULL, m_hinstance, NULL);

有边框窗口

m_hwnd = CreateWindowEx(WS_EX_APPWINDOW, m_applicationName, m_applicationName, WS_OVERLAPPEDWINDOW, posX, posY, screenWidth, screenHeight, NULL, NULL, m_hinstance, NULL);