我想通过msdn学习Win32,但我遇到了RegisterClassEx的问题,我查了其他线程,指出可能并非所有成员都已初始化,但我确定它们是。使用RegisterClassEx的错误
#include <Windows.h>
#include <tchar.h>
static const TCHAR windowclass_sz[] = _T("WindowClass1");
static const TCHAR windowtitle_sz[] = _T("DirectX 12 Demo");
bool Stop = true;
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM
lParam)
{
switch (message)
{
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE PrevhInstance, LPSTR
lpCmdLine, int nCmdShow)
{
MSG msg;
HWND hWnd;
WNDCLASSEX wcex;
ZeroMemory(&wcex, sizeof(WNDCLASSEX));
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hIcon = LoadIcon(hInstance, IDI_APPLICATION);
wcex.hIconSm = LoadIcon(wcex.hInstance, IDI_APPLICATION);
wcex.hInstance = hInstance;
wcex.lpfnWndProc = WndProc;
wcex.lpszClassName = windowclass_sz;
wcex.lpszMenuName = nullptr;
wcex.style = CS_HREDRAW | CS_VREDRAW;
RegisterClassEx(&wcex);
if (!RegisterClassEx(&wcex))
{
GetLastError();
MessageBox(NULL, _T("RegisterClassEx Call Error!"), _T("ERROR"),
MB_ICONERROR && MB_OK);
return 1;
}
hWnd = CreateWindowEx(NULL, windowclass_sz, windowtitle_sz,
WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
800, 600, NULL, NULL, hInstance, NULL);
if (!hWnd)
{
MessageBox(NULL, _T("CreateWindowEx Call Error!"), _T("ERROR"),
MB_ICONERROR && MB_OK);
return 1;
}
else
{
Stop = false;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
while (Stop == false)
{
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int)msg.wParam;
}
正如你所看到的,RegisterClassEx错误被触发,但我不知道什么是错的。
消息框弹出“RegisterClassEx Call Error!”所以程序结束了,这里有什么问题?
你注意到了什么问题? –
那么,消息框指的是WNDCLASSEX,所以我认为这是我应该看的地方,当我无法通过我自己或通过其他线程来掌握这个问题时,我就来到这里。 –
有问题吗?如果是这样,你怎么知道有问题?你还没有问过问题。 –