创建非模态对话框怎么对话框没添加的应用程序中呀？

C/C++ code

#include <windows.h>LRESULT CALLBACK WndProc     (HWND, UINT, WPARAM, LPARAM) ;BOOL    CALLBACK ColorScrDlg (HWND, UINT, WPARAM, LPARAM) ;HWND hDlgModeless ;int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,    PSTR szCmdLine, int iCmdShow){    static TCHAR szAppName[] = TEXT ("Colors2") ;    HWND         hwnd ;    MSG          msg ;    WNDCLASS     wndclass ;    wndclass.style         = CS_HREDRAW | CS_VREDRAW ;    wndclass.lpfnWndProc   = WndProc ;    wndclass.cbClsExtra    = 0 ;    wndclass.cbWndExtra    = 0 ;    wndclass.hInstance     = hInstance ;    wndclass.hIcon         = LoadIcon (NULL, IDI_APPLICATION) ;    wndclass.hCursor       = LoadCursor (NULL, IDC_ARROW) ;    wndclass.hbrBackground = CreateSolidBrush (0L) ;    wndclass.lpszMenuName  = NULL ;    wndclass.lpszClassName = szAppName ;    if (!RegisterClass (&wndclass))    {        MessageBox (NULL, TEXT ("This program requires Windows NT!"),            szAppName, MB_ICONERROR) ;        return 0 ;    }    hwnd = CreateWindow (szAppName, TEXT ("Color Scroll"),        WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,        CW_USEDEFAULT, CW_USEDEFAULT,        CW_USEDEFAULT, CW_USEDEFAULT,        NULL, NULL, hInstance, NULL) ;    ShowWindow (hwnd, iCmdShow) ;    UpdateWindow (hwnd) ;    hDlgModeless = CreateDialog (hInstance, TEXT ("ColorScrDlg"), //注意这，我的对话框ID就是"ColorScrDlg"        hwnd, ColorScrDlg) ;                                //但就是没有添加成功    while (GetMessage(&msg, NULL, 0, 0))    {        if (hDlgModeless == 0 || !IsDialogMessage(hDlgModeless, &msg))        {            TranslateMessage(&msg);            DispatchMessage(&msg);        }    }    return msg.wParam;}LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam){    switch (message)    {    case  WM_DESTROY:        DeleteObject((HGDIOBJ)SetClassLong(hwnd, GCL_HBRBACKGROUND, (LONG)GetStockObject(WHITE_BRUSH)));        PostQuitMessage(0);        return 0;    }    return DefWindowProc(hwnd, message, wParam, lParam);}BOOL CALLBACK ColorScrDlg(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){    static int iColor[3];    HWND hwndParent, hCtrl;    int iCtrlID, iIndex;    switch(message)    {    case WM_INITDIALOG:        for (iCtrlID = 10; iCtrlID < 13; iCtrlID++)        {            hCtrl = GetDlgItem(hDlg, iCtrlID);            SetScrollRange(hCtrl, SB_CTL, 0, 255, FALSE);            SetScrollPos(hCtrl, SB_CTL, 0, FALSE);        }        return TRUE;    case WM_VSCROLL:        hCtrl = (HWND)lParam;        iCtrlID = GetWindowLong(hCtrl, GWL_ID);        iIndex = iCtrlID - 10;        hwndParent = GetParent(hDlg);        switch(LOWORD(wParam))        {        case SB_PAGEDOWN :            iColor[iIndex] += 15 ;        // fall through        case SB_LINEDOWN :            iColor[iIndex] = min (255, iColor[iIndex] + 1) ;            break ;        case SB_PAGEUP :            iColor[iIndex] -= 15 ;        // fall through        case SB_LINEUP :            iColor[iIndex] = max (0, iColor[iIndex] - 1) ;            break ;        case SB_TOP :            iColor[iIndex] = 0 ;            break ;        case SB_BOTTOM :            iColor[iIndex] = 255 ;            break ;        case SB_THUMBPOSITION :        case SB_THUMBTRACK :            iColor[iIndex] = HIWORD (wParam) ;            break ;        default :            return FALSE ;                            }        SetScrollPos(hCtrl, SB_CTL, iColor[iIndex], TRUE);    SetDlgItemInt (hDlg,  iCtrlID + 3, iColor[iIndex], FALSE) ;    DeleteObject ((HGDIOBJ) SetClassLong (hwndParent, GCL_HBRBACKGROUND,            (LONG) CreateSolidBrush (            RGB (iColor[0], iColor[1], iColor[2])))) ;    InvalidateRect (hwndParent, NULL, TRUE) ;    return TRUE ;    }    return FALSE;}         
 

[解决办法]
hDlgModeless = CreateDialog (hInstance, TEXT ("ColorScrDlg"), //注意这，我的对话框ID就是"ColorScrDlg"
hwnd, ColorScrDlg) ; //但就是没有添加成功

BOOL CALLBACK ColorScrDlg(HWND...
换一个函数名称