已解决，谢谢各位的关注！
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最近是折腾窗口编程，程序中要判断鼠标光标下面的窗口是否为我的程序里生出来的。我使用的函数和语句是：
方法1：
if(GetWindowThreadProcessId(hWnd,&dwProcessID1)==(GetWindowThreadProcessId(hTempWnd,&dwProcessID2)
MessageBox(NULL, "窗口同宗！","窗口比较",MB_OK);
方法2：
GetWindowThreadProcessId(hWnd,&dwProcessID1);
GetWindowThreadProcessId(hTempWnd,&dwProcessID2);
if(dwProcessID1==dwProcessID2)
MessageBox(NULL, "窗口同宗！","窗口比较",MB_OK);
可发现，在处理过程中发现一些很奇怪的事情：
当鼠标指向自身程序主窗口的标题栏最小化、最大化、关闭按钮以及窗口的左边框、下边框时，以上两个关系表达式竟然都不成立！那：
1、标题栏的最小化、最大化、关闭按钮，以及窗口的左边框、下边框究竟是谁创建的？
2、使用什么办法才能判断出鼠标光标下面的窗口，是否为我自己的程序里生出来的呢？
请好心指点一二，先谢谢了！
#include "windows.h"
LRESULT CALLBACK WndProc ( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam );
int WINAPI WinMain ( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd )
{
WNDCLASS wndclass;
HWND hWnd;
MSG msg;
static TCHAR szClassName[] = TEXT ( "程序类" );
RtlZeroMemory ( &wndclass, sizeof ( wndclass ) );
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = WndProc;
wndclass.lpszClassName = szClassName;
wndclass.hInstance = hInstance;
wndclass.hIcon = NULL;
wndclass.hCursor = LoadCursor ( NULL, IDC_ARROW );
wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); //CreateSolidBrush ( RGB ( 160, 190, 160 ) ); //
wndclass.lpszMenuName = NULL;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
if ( !RegisterClass ( &wndclass ) )
{
MessageBox ( NULL, TEXT ( "本程序需要运行在WinNT系列操作系统上!" ), TEXT ( "Error" ), MB_OK | MB_ICONWARNING );
}
hWnd = CreateWindow ( szClassName, TEXT ( "我的第N个程序" ), WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL, NULL, hInstance, NULL );
ShowWindow ( hWnd, nShowCmd );
UpdateWindow ( hWnd );
while ( GetMessage ( &msg, NULL, 0, 0 ) )
{
TranslateMessage ( &msg );
DispatchMessage ( &msg );
}
return msg.wParam;
}
#define IDE_KEY 100
LRESULT CALLBACK WndProc ( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam )
{
HINSTANCE hInstance=NULL;
POINT pt;
HWND hTempWnd,hEdit;
unsigned long dwProcessID1,dwProcessID2;
int iLeng=0;
char strKey[100]="";
switch(msg)
{
case WM_CREATE:
hInstance=((LPCREATESTRUCT)lParam)->hInstance;
// 创建两个编辑框显示跟踪的窗口值：进程ID号
CreateWindow("Edit","",WS_CHILD|WS_VISIBLE|WS_BORDER|ES_AUTOHSCROLL,100,60,240,20,hWnd,(HMENU)(IDE_KEY+100),hInstance,0);
CreateWindow("Edit","",WS_CHILD|WS_VISIBLE|WS_BORDER|ES_AUTOHSCROLL,100,90,240,20,hWnd,(HMENU)(IDE_KEY+200),hInstance,0);
break;
case WM_LBUTTONDOWN:
// case WM_NCLBUTTONDOWN:
SetCapture(hWnd); // 开始捕获（独占）鼠标信息
break;
case WM_LBUTTONUP:
case WM_NCLBUTTONUP:
ReleaseCapture(); // 结束捕获状态
break;
case WM_MOUSEMOVE:
case WM_NCMOUSEMOVE:
pt.x=LOWORD(lParam); // 相对于当前客户区的鼠标坐标
pt.y=HIWORD(lParam);
ClientToScreen(hWnd,&pt); // 客户坐标转换为屏幕坐标
hTempWnd=WindowFromPoint(pt); // 获取鼠标下的窗口句柄
// if(GetWindowThreadProcessId(hTempWnd,NULL)==GetWindowThreadProcessId(hWnd,NULL)) // 如是程序本身就不获取了
// break;
hEdit=GetDlgItem(hWnd,IDE_KEY+100);
GetWindowThreadProcessId(hWnd,&dwProcessID1);// 程序的主窗口句柄
ultoa(dwProcessID1, strKey,10);
if(hWnd==NULL)
SetWindowText(hEdit,"Sorry!, No Find Window."); // 显示到本身程序里的文本框1里
else
SetWindowText(hEdit,strKey);
hEdit=GetDlgItem(hWnd,IDE_KEY+200);
GetWindowThreadProcessId(hTempWnd,&dwProcessID2);// 鼠标下的窗口句柄
ultoa(dwProcessID2, strKey,10);
if(hWnd==NULL)
SetWindowText(hEdit,"Sorry!, No Find Window."); // 显示到本身程序里的文本框2里
else
SetWindowText(hEdit,strKey);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
}
return DefWindowProc ( hWnd, msg, wParam, lParam );
}
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