标准的对话框类都以“#32770”作为类名，当然常规的应用没有任何问题，但是如果FindWindow查找窗口时就比较容易造成困扰。下面就来介绍下自定义对话框类的简单方法。
首先第一步 修改资源 .rc 文件中的类名，添加CLASS "你想要的类名"
IDD_DLG7_DIALOG DIALOGEX 0, 0, 133, 69STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENUEXSTYLE WS_EX_APPWINDOWCAPTION "Dlg7"CLASS "myDefWndClass"FONT 9, "宋体"BEGIN
END
第二步，在创建对话框之前注册自定义类名
WNDCLASSEX ws = { sizeof(WNDCLASSEX) }; GetClassInfoEx(hInst, _T("#32770"), &ws); ws.lpszClassName = _T("myDefWndClass"); VERIFY( RegisterClassEx(&ws) );上面两步就完成了自定义类名的过程。
下面的代码从资源中提取类名，如果不是默认的话就注册，等于替代了第二步，比较具有些通用性。
//从资源获取对话框类名称 CString __cdecl GetDialogWndClassName(HINSTANCE hInst, LPCTSTR m_lpszTemplateName) { CString wndClass; #pragma pack(push, 1) typedef struct { WORD dlgVer; WORD signature; DWORD helpID; DWORD exStyle; DWORD style; WORD cDlgItems; short x; short y; short cx; short cy; } _DLGTEMPLATEEX; #pragma pack(pop) do { HRSRC hResource = FindResource(hInst, m_lpszTemplateName, RT_DIALOG); if(hResource == NULL) break; HGLOBAL hDialogTemplate = LoadResource(hInst, hResource); if(hDialogTemplate == NULL) break; DLGTEMPLATE *pTemplate = (DLGTEMPLATE*)LockResource(hDialogTemplate); BOOL bDialogEx = ((_DLGTEMPLATEEX*)pTemplate)->signature == 0xFFFF; WORD* pw; if (bDialogEx) pw = (WORD*)((_DLGTEMPLATEEX*)pTemplate + 1); else pw = (WORD*)(pTemplate + 1); if (*pw == 0xFFFFU) // Skip menu name string or ordinal pw += 2; // WORDs else while(*pw++); if (*pw == 0xFFFFU) // Skip class name string or ordinal pw += 2; // WORDs else { wndClass = (WCHAR*)pw; while(*pw++); } //while (*pw++); // Skip caption string UnlockResource(hDialogTemplate); FreeResource(hDialogTemplate); } while (0); return wndClass; } //注册自定义对话框类名 BOOL RegMyDialogClass(HINSTANCE hInst, LPCTSTR m_lpszTemplateName) { BOOL bRet = FALSE; CString szWndClass = GetDialogWndClassName(hInst, m_lpszTemplateName); if(!szWndClass.IsEmpty()) { WNDCLASSEX ws = { sizeof(WNDCLASSEX) }; GetClassInfoEx(hInst, _T("#32770"), &ws); ws.lpszClassName = szWndClass; VERIFY( RegisterClassEx(&ws) ); } return bRet; } CDlg7Dlg::CDlg7Dlg(CWnd* pParent /*=NULL*/) : CDialog(CDlg7Dlg::IDD, pParent) { RegMyDialogClass(AfxGetResourceHandle(), m_lpszTemplateName); //{{AFX_DATA_INIT(CDlg7Dlg) // NOTE: the ClassWizard will add member initialization here //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); }