C++在回调函数中从DialogBox获取和设置值

#include <windows.h>

// DialogBox回调函数
INT_PTR CALLBACK DialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg)
    {
    case WM_INITDIALOG:
        // 初始化对话框
        return TRUE;

    case WM_COMMAND:
        switch (LOWORD(wParam))
        {
        case IDOK:
            {
                // 获取编辑框句柄
                HWND hEdit = GetDlgItem(hwndDlg, IDC_EDIT1);

                // 获取编辑框文本内容
                int length = GetWindowTextLength(hEdit);
                char* buffer = new char[length + 1];
                GetWindowText(hEdit, buffer, length + 1);

                // 打印编辑框文本内容
                MessageBox(hwndDlg, buffer, "编辑框内容", MB_OK);

                delete[] buffer;
            }
            break;

        case IDCANCEL:
            // 关闭对话框
            EndDialog(hwndDlg, 0);
            return TRUE;
        }
        break;
    }

    return FALSE;
}

// 主函数
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    // 创建对话框
    DialogBox(hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, DialogProc);

    return 0;
}