获取窗口的分寸失败，看不出原因，求教

获取窗口的尺寸失败，看不出原因，求教

		.386
		.model flat,stdcall
		option casemap:none

include		windows.inc
include		user32.inc
includelib	user32.lib
include		kernel32.inc
includelib	kernel32.lib
include		gdi32.inc
includelib	gdi32.lib



DLG_MAIN	equ			1000
IDC_POX		equ			1002 
IDC_POY		equ			1003
IDC_POXEDIT equ			1004 
IDC_POYEDIT equ			1005
IDC_STGAME	equ			1006
ICO_MAIN	equ			1000
IDC_CAPTURE	equ			1007

			.data?
hInstance	dd		?
hGame		dd		?

			.data
szGameTitle	db		'QQ游戏 - 连连看角色版',0
szTextFormat db		'rect.left=%d',0dh
			 db		'rect.top=%d',0dh
			 db		'rect.right=%d',0dh
			 db		'rect.bottom=%d',0

			.code
_ProcDlgMain		proc	uses ebx esi edi hWnd,uMsg,wParam,lParam
			local	@rect:RECT
			local	@szBuffer[256]:byte
			local	hWinMain
			
			
			mov		eax,uMsg
			.if		eax == WM_CLOSE
					invoke	EndDialog,hWnd,NULL
			.elseif	eax == WM_INITDIALOG
					invoke	LoadIcon,hInstance,ICO_MAIN
					invoke	SendMessage,hWnd,WM_SETICON,ICON_BIG,eax
					
			.elseif	eax == WM_COMMAND
					mov		eax,wParam
					.if		ax == IDC_CAPTURE ;获取窗口的源点坐标
							invoke	FindWindow,NULL,addr szGameTitle
							mov		hGame,eax
							invoke	GetWindowRect,hGame,addr @rect
							;invoke	wsprintf,addr @szBuffer,addr szTextFormat,@rect.left,@rect.top,@rect.right,@rect.bottom
							;invoke	MessageBox,hWnd,addr @szBuffer,NULL,0
							invoke	SetDlgItemInt,hWnd,IDC_POXEDIT,@rect.left,FALSE
							invoke	SetDlgItemInt,hWnd,IDC_POYEDIT,@rect.top,FALSE
					.endif
			.else
					mov		eax,FALSE
					ret
			.endif
			mov		eax,TRUE
			ret
_ProcDlgMain		endp
			
start:
			invoke		GetModuleHandle,NULL
			mov			hInstance,eax
			invoke		DialogBoxParam,hInstance,DLG_MAIN,NULL,offset _ProcDlgMain,NULL
			invoke		ExitProcess,NULL
			end			start

#include	<resource.h>

#define		DLG_MAIN	1000
#define		IDC_POX		1002 //X坐标
#define		IDC_POY		1003 //Y坐标
#define		IDC_POXEDIT 1004 //X坐标输入框
#define		IDC_POYEDIT 1005 //Y坐标输入框
#define		IDC_STGAME	1006
#define		ICO_MAIN	1000
#define		IDC_CAPTURE	1007 //初始化，获取窗口源点坐标

ICO_MAIN	ICON		"my.ico"

DLG_MAIN	DIALOG		300,200,200,150
STYLE		DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU | WS_VISIBLE
CAPTION		"连连看外挂"
FONT		9,"宋体"
{
LTEXT		"X坐标:",IDC_POX,15,20,30,12
EDITTEXT	IDC_POXEDIT,40,18,30,15
LTEXT		"Y坐标:",IDC_POY,15,38,30,12
EDITTEXT	IDC_POYEDIT,40,35,30,15
PUSHBUTTON	"开始",IDOK,160,25,30,15
PUSHBUTTON	"初始化",IDC_CAPTURE,160,45,30,15

}

我的本意是先点击“初始化”按钮，先显示出游戏窗口的初始左上左边，可是实际出现的结果却是令人大吃一惊，居然是：x=11335040,Y=0,无法上传截图，不知道为什么！不知道哪里出现了错误，求指点！
------解决方案--------------------
比较可能 FindWindow() 调用就没能找寻到响应窗口吧，下面的 GetWindowRect() 也就错了。