Диалоговые окна.

[AnnJoy]

Подскажите ,почему открывается только одно немодальное диалоговое окно.

#include <windows.h>
#include "resource.h"

const char szClassName[]="WinLabClass\0";

HINSTANCE hInstance=0;
HWND hDlg=(HWND)-1;

INT_PTR CALLBACK ModalProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK ModeLessProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow)
{
	HWND hWnd=0;
	WNDCLASSA WndClass;
	MSG Msg;

	WndClass.lpszClassName=szClassName; 
	WndClass.hInstance=hInstance;
	WndClass.lpfnWndProc=WndProc; 
	WndClass.hCursor=LoadCursor(NULL, IDC_ARROW); 
	WndClass.hIcon=LoadIcon(0, IDI_WINLOGO); 
	WndClass.lpszMenuName=MAKEINTRESOURCEA(IDR_MENU); 
	WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH); 
	WndClass.style=CS_HREDRAW | CS_VREDRAW;
	WndClass.cbClsExtra=0;
	WndClass.cbWndExtra=0;

	if(RegisterClassA(& WndClass) == FALSE)
		return 0;

	hWnd=CreateWindowA(szClassName, 0, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 
						CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); 
	ShowWindow(hWnd, SW_SHOW);
	SetTimer(hWnd, 1, 1000, NULL);

	while(GetMessageA(& Msg, hWnd, 0, 0) != FALSE){ 
		if(IsWindow(hDlg) == FALSE || IsDialogMessage(hDlg, & Msg) == FALSE){
			TranslateMessage(& Msg); 
			DispatchMessage(& Msg); 
		}
	}
	
	return(Msg.wParam);
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	HDC hDC=0;
	PAINTSTRUCT ps;
	static RECT Rect;
	static int t=0;
	static char mass[0x10]={0};

	switch(message)
	{ 
	case WM_TIMER:
		t++;
		itoa(t, mass, 10);
		hDC=GetDC(hWnd);
		DrawTextA(hDC, mass, -1, & Rect, DT_CENTER | DT_VCENTER);
		ReleaseDC(hWnd, hDC);
		break;
	case WM_PAINT:
		GetClientRect(hWnd, & Rect);
		hDC=BeginPaint(hWnd,& ps);
		itoa(t, mass, 10);
		DrawTextA(hDC, mass, -1, & Rect, DT_CENTER | DT_VCENTER);
		EndPaint(hWnd,& ps);
	break;
	case WM_COMMAND:
		if(LOWORD(wParam) == ID_MES1)
			MessageBoxA(hWnd, "Message 1 was called.\0", "Info...\0", MB_OK | MB_ICONINFORMATION);
		else if(LOWORD(wParam) == ID_MES2)
			MessageBoxA(hWnd, "Message 2 was called.\0", "Info...\0", MB_OK | MB_ICONINFORMATION);
		break;
	case WM_LBUTTONUP:
		DialogBoxParamA(hInstance, MAKEINTRESOURCEA(IDD_DIALOG), hWnd, ModalProc, NULL);
		break;
	case WM_RBUTTONUP:
		if(IsWindow(hDlg) == FALSE){
			hDlg=CreateDialogA(hInstance, MAKEINTRESOURCEA(IDD_LESS), hWnd, ModeLessProc);
			ShowWindow(hDlg, SW_SHOW);
		}
		break;
	case WM_DESTROY:
		KillTimer(hWnd, 1);
		PostQuitMessage(0);
		break;
	default: 
		break;
	}
	
	return(DefWindowProc(hWnd, message, wParam, lParam));
}

INT_PTR CALLBACK ModalProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch(message)
	{
	case WM_INITDIALOG:
		SetWindowTextA(hDlg, "Modal Dialog\0");
		return TRUE;
		break;
	case WM_COMMAND:
		if(LOWORD(wParam) == ID_OK)
			EndDialog(hDlg, ID_OK);
		break;
	case WM_CLOSE:
		EndDialog(hDlg, ID_OK);
		break;
	default:
		break;
	}

	return FALSE;
}

INT_PTR CALLBACK ModeLessProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch(message)
	{
	case WM_INITDIALOG:
		SetWindowTextA(hDlg, "Modeless Dialog\0");
		return TRUE;
		break;
	case WM_COMMAND:
		if(LOWORD(wParam) == ID_OK)
			DestroyWindow(hDlg);
		break;
	case WM_CLOSE:
		DestroyWindow(hDlg);
		break;
	default:
		break;
	}

	return FALSE;
}