WinApi window is not displayed - c++

Question

I have a simple code that converts a written number into binary format. But when trying to run the project, the window just doesn't show up. I don't know what the problem is, so hopefully you can help me. I use Visual Studio 2022
Code:
#include "App.h"
CApp::CApp()
{
using std::wstring;
using std::string;
try
{
this->init_native_window_obj();
this->create_native_controls();
}
catch (const std::exception& e)
{
string expt_data = e.what();
MessageBox(nullptr, wstring(begin(expt_data), end(expt_data)).c_str(), L"Помилка", MB_ICONERROR | MB_OK);
ExitProcess(EXIT_FAILURE);
}
}
void CApp::init_native_window_obj()
{
using std::runtime_error;
using namespace std::string_literals;
WNDCLASSEX _wc{ sizeof(WNDCLASSEX) };
_wc.cbClsExtra = 0;
_wc.cbWndExtra = 0;
_wc.hbrBackground = reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH));
_wc.hCursor = LoadCursor(nullptr, IDC_ARROW);
_wc.hIcon = LoadIcon(nullptr, IDI_APPLICATION);
_wc.hIconSm = LoadIcon(nullptr, IDI_APPLICATION);
_wc.hInstance = GetModuleHandle(nullptr);
_wc.lpfnWndProc = CApp::application_proc;
_wc.lpszClassName = this->m_szClassName.c_str();
_wc.lpszMenuName = nullptr;
_wc.style = CS_HREDRAW | CS_VREDRAW;
if (!RegisterClassEx(&_wc))
throw runtime_error("Error, can't register main window class!"s);
RECT _windowRC{ 0, 0, this->m_AppWidth, this->m_AppHeight };
AdjustWindowRect(&_windowRC, WS_DLGFRAME | WS_SYSMENU | WS_MINIMIZEBOX | WS_MAXIMIZE, false);
if (this->m_hWnd = CreateWindowEx(
0,
this->m_szClassName.c_str(),
this->m_szAppName.c_str(),
WS_DLGFRAME | WS_SYSMENU | WS_MINIMIZEBOX | WS_MAXIMIZE,
(GetSystemMetrics(SM_CXSCREEN) - _windowRC.right) / 2,
(GetSystemMetrics(SM_CYSCREEN) - _windowRC.bottom) / 2,
_windowRC.right, _windowRC.bottom, nullptr, nullptr, nullptr, this
), !this->m_hWnd)
throw runtime_error("Error, can't create main window");
}
void CApp::create_native_controls()
{
using std::runtime_error;
using namespace::std::string_literals;
if (this->m_hWndButton = CreateWindowEx(
0,
L"BUTTON",
L"Перевести",
WS_CHILD | BS_PUSHBUTTON | WS_VISIBLE,
56, 108, 238, 37, this->m_hWnd, reinterpret_cast<HMENU>(CApp::CTL_ID::CALCBUTTON_ID), nullptr, nullptr
), !this->m_hWndButton)
throw runtime_error("Error, can't create button!"s);
if (this->m_hWndEdit = CreateWindowEx(
WS_EX_CLIENTEDGE,
L"EDIT",
L"256",
WS_CHILD | WS_VISIBLE | ES_AUTOHSCROLL,
56, 66, 238, 24, this->m_hWnd, reinterpret_cast<HMENU>(CApp::CTL_ID::RESULTEDIT_ID), nullptr, nullptr
), !this->m_hWndEdit)
throw runtime_error("Error, can't create edit!"s);
HFONT hFont = CreateFont(18, 0, 0, 0, FW_REGULAR, 0, 0, 0, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, CLEARTYPE_QUALITY, DEFAULT_PITCH, L"Roboto");
SendMessage(this->m_hWndEdit, WM_SETFONT, reinterpret_cast<WPARAM>(hFont), TRUE);
SendMessage(this->m_hWndButton, WM_SETFONT, reinterpret_cast<WPARAM>(hFont), TRUE);
}
int CApp::Run()
{
MSG _msg{};
ShowWindow(this->m_hWnd, SW_SHOWDEFAULT);
UpdateWindow(this->m_hWnd);
while (GetMessage(&_msg, nullptr, 0, 0))
{
TranslateMessage(&_msg);
DispatchMessage(&_msg);
}
return static_cast<int>(_msg.wParam);
}
LRESULT CApp::application_proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
CApp* pApp;
if (uMsg == WM_NCCREATE)
{
pApp = static_cast<CApp*>(reinterpret_cast<CREATESTRUCT*>(lParam)->lpCreateParams);
SetLastError(0);
if (!SetWindowLongPtr(hWnd, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(pApp)))
{
if (GetLastError() != 0)
{
return false;
}
}
}
else
{
pApp = reinterpret_cast<CApp*>(GetWindowLongPtr(hWnd, GWLP_USERDATA));
}
if (pApp)
{
pApp->m_hWnd = hWnd;
return pApp->window_proc(hWnd, uMsg, wParam, lParam);
}
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
LRESULT CApp::window_proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_DESTROY:
{
PostQuitMessage(EXIT_SUCCESS);
}
return 0;
case WM_COMMAND:
{
switch (static_cast<CApp::CTL_ID>(LOWORD(wParam)))
{
case CApp::CTL_ID::CALCBUTTON_ID:
{
try
{
std::wstring text{};
text.resize(MAX_PATH);
GetWindowText(this->m_hWndEdit, &text[0], MAX_PATH);
text.erase(remove(begin(text), end(text), 0), end(text));
if (text.empty())
{
MessageBox(this->m_hWnd, L"Введіть число!", L"Інформація", MB_ICONINFORMATION | MB_OK);
break;
}
std::string binary = std::bitset<16>(std::stoi(text)).to_string();
text = std::wstring(begin(binary), end(binary));
SetWindowText(this->m_hWndEdit, text.c_str());
}
catch(...)
{
MessageBox(this->m_hWnd, L"error", MB_ICONINFORMATION | MB_OK);
}
}
break;
}
}
return 0;
}
}
CApp::~CApp() {}
I tried changing window styles, changing the location when the window refreshes, but nothing has helped.