Question

好吧，所以我已经坐在这里超过30分钟试图解决这个问题，在＆＃34;创建窗口＆＃34;它给了我一个NULL值，除非我的类名是＆＃34; LoginClassName＆＃34;如果我使用＆＃34; RegisterClassName＆＃34;它将返回NULL。我正在尝试创建一个弹出窗口，到目前为止它踢我的屁股。我创建的类和LoginClass一样，所以我不会真正看到问题。

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR szCmdLine, int iCmdShow) {

MSG msg;
WNDCLASSW LoginClass = { 0 };
wchar_t LoginClassName[] = L"LoginWindow";

LoginClass.cbClsExtra = 0;
LoginClass.cbWndExtra = 0;
LoginClass.hbrBackground = HBRUSH(GetStockObject(WHITE_BRUSH));
LoginClass.hCursor = LoadCursor(hInstance, IDC_ARROW);
LoginClass.hIcon = LoadIcon(hInstance, IDI_APPLICATION);
LoginClass.lpfnWndProc = LoginWndProc;
LoginClass.hInstance = hInstance;
LoginClass.lpszClassName = LoginClassName;
LoginClass.lpszMenuName =  NULL;
LoginClass.style = CS_VREDRAW | CS_HREDRAW;

if (!RegisterClass(&LoginClass))
{
    MessageBox(NULL, L"Error", L"Error", MB_OK | MB_ICONERROR);
    return 0;
}

WNDCLASSW RegisterWindowClass = { 0 };

wchar_t RegisterClassName[] = L"Test";

RegisterWindowClass.cbClsExtra = 0;
RegisterWindowClass.cbWndExtra = 0;
RegisterWindowClass.hbrBackground = HBRUSH(GetStockObject(WHITE_BRUSH));
RegisterWindowClass.hCursor = LoadCursor(hInstance, IDC_ARROW);
RegisterWindowClass.hIcon = LoadIcon(hInstance, IDI_APPLICATION);
RegisterWindowClass.lpfnWndProc = RegisterWndProc;
RegisterWindowClass.hInstance = hInstance;
RegisterWindowClass.lpszClassName = RegisterClassName;
RegisterWindowClass.lpszMenuName = NULL;
RegisterWindowClass.style = CS_VREDRAW | CS_HREDRAW;

if (!RegisterClass(&RegisterWindowClass))
{
    MessageBox(NULL, L"Error", L"Error", MB_OK | MB_ICONERROR);
    return 0;
}

hLoginWindow = CreateWindow(LoginClassName, L"GameLauncher Login", WS_SYSMENU | WS_CAPTION | WS_OVERLAPPED, CW_USEDEFAULT, CW_USEDEFAULT, 350, 200, NULL, NULL, hInstance, NULL);
hRegisterWindow = CreateWindowEx(NULL, RegisterClassName, L"Register Account", WS_SYSMENU | WS_CAPTION | WS_OVERLAPPED, CW_USEDEFAULT, CW_USEDEFAULT, 350, 200, NULL, NULL, hInstance, NULL);

ShowWindow(hLoginWindow, iCmdShow);
UpdateWindow(hLoginWindow);

while (GetMessage(&msg, NULL, 0, 0))
{
    TranslateMessage(&msg);
    DispatchMessage(&msg);
}

return msg.wParam;
}

这是WndProc的{{1}}：

RegisterClassWindow

CreateWindow返回一个NULL句柄

0 个答案: