获取线程函数的句柄
整码下载：http://tunps.com/tmp/UsbAutoCopy.zip
这是WinMain：
int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow )
{
DialogBox(hInstance, MAKEINTRESOURCE(IDD_MAIN),
hWnd, DlgProc);
return 0;
}
在全球范围内：
typedef struct ArgsTag {
CHAR vol;
HWND hWndDlg;
} Args, *pArgs;
：
pArgs arg;
arg = malloc(sizeof(struct ArgsTag));
arg->vol= FirstDriveFromMask(lpdbv->dbcv_unitmask);
arg->hWndDlg = hWndDlg;
_beginthread ((LPVOID)CopyThread, 0, (LPVOID)arg) ;
这是Dialog过程函数原型：
LRESULT CALLBACK DlgProc(HWND hWndDlg, UINT Msg, WPARAM wParam, LPARAM lParam);
得到正确的arg->vol，但arg->hWndDlg返回错误的地址。
，我想获得主窗口句柄（hWndDlg）。
hLog = GetDlgItem(arg->hWndDlg,IDC_LOG);
sizeof(args) = 4
sizeof(ArgsTag) = 8
sizeof(args->vol) = 1
sizeof(args->hWndDlg) = 4
更新：2011.07.01
好吧，我现在对这个问题非常生气。我想发布整个代码，编译 visual c ++ 6.0 / win32应用程序
这是一个usb自动复制程序，它可以检测插入的USB存储设备，并将USB存储设备上的指定文件路径复制到硬盘上的指定目录，同时显示程序右侧编辑框中的日志。 / p>
uac.c
#include <windows.h>
#include <iostream.h>
#include <process.h>
#include <stdio.h>
#include <dbt.h>
#include <Shlobj.h>
#include "resource.h"
#include "Shlwapi.h"
//---------------------------------------------------------------------------
#define _TRACE true;
DEV_BROADCAST_HDR* dhr;
PDEV_BROADCAST_VOLUME lpdbv;
//OPENFILENAME ofn;
BROWSEINFO bi;
LPITEMIDLIST lpItemIdList;
HWND hWnd;
static HICON hIcon,hIconSm;
HANDLE hFile,hFileList,hDstDir,hLog,hBtnSave,hBtnBrowse;
DWORD err,dwWritenSize = 0;
CHAR vol,bufFileList[1024],bufDstDir[MAX_PATH],subStr[1024],buf[1024],buf2[1024],deviceID[1024];
TCHAR szPath[_MAX_PATH];
PCHAR pvol;
LPCTSTR configFileName = "D:\\win32dev\\sdk\\UsbAutoCopy\\Debug\\config.ini";
//LPSTR szPath;
UINT i,len,j=0;k=0;
FILE *stream;
char buflist[1000][1024]={0};
typedef struct ArgsTag {
HWND hWndDlg;
CHAR vol;
} Args, *pArgs;
LRESULT CALLBACK DlgProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
LPTSTR ReadConfigFile(LPTSTR key);
BOOL WriteConfigFile(TCHAR *bufFileList,TCHAR *bufDstDir);
int ReplaceStr(char *sSrc, char *sMatchStr, char *sReplaceStr);
char FirstDriveFromMask (ULONG unitmask); //prototype
void CopyThread(CHAR vol);
char* getFileName(char* dirName);
/************************************************************************/
/* e.g: \1.txt->\1.txt \dir1\dir2\test.exe->\test.exe */
/************************************************************************/
char* getFileName(char* dirName)
{
unsigned int i,j=0;
//buf={0};
for(i=strlen(dirName);i>=0;i--)
{
//fileName[j++] = dirName[i];
if(dirName[i] == '\\')
{
for(j=0;j<strlen(dirName);)
buf[j++] = dirName[i++];
break;
}
}
return buf;
}
void CopyThread(pArgs arg)
{
char temp[1024];
pvol = &(arg->vol);
pvol[1] = 0;
//GetPrivateProfileString("config","DeviceID","",buf,sizeof(buf),strcat(pvol,":\\dp\\device.ini")); 没有section无法读取DeviceID
strcat(pvol,":\\dp\\device.ini");
//hFile = CreateFile(pvol,GENERIC_READ,FILE_SHARE_WRITE,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
//ReadFile((HANDLE)hFile,buf,sizeof(buf)/2,&dwWritenSize,NULL);
// get the Device ID
if( (stream = fopen( pvol, "r" )) != NULL )
{
while(fgets( buf, sizeof(buf), stream ))
{
if(i=strstr(buf,"DeviceID=") != NULL)
{
sscanf( buf, "DeviceID=%s",deviceID);
break;
}
}
fclose( stream );
//make dir named with DeivceID
GetWindowText(hFileList,bufFileList,sizeof(bufFileList)/sizeof(TCHAR));
GetWindowText(hDstDir,bufDstDir,sizeof(bufDstDir)/sizeof(TCHAR));
strcpy(temp,bufDstDir);
strcat(temp,"\\");
CreateDirectory(strcat(temp,deviceID),NULL);
//started to copy and show log
len = strlen(bufFileList);
for(i=0;i<len;i++)
{
buflist[j][k++] = bufFileList[i];
if(bufFileList[i] == '\n')
{
k--;
buflist[j][k] =0;
buflist[j][--k] =0;
j++;
k=0;
}
}
for(j=0;buflist[j][0] != 0;j++)
{
pvol = &(arg->vol);
pvol[1] = 0;
strcat(pvol,":");
strcat(pvol,buflist[j]);
strcpy(temp,bufDstDir);
strcat(temp,"\\");
strcat(temp,deviceID);
CopyFile(pvol,strcat(temp,getFileName(buflist[j])),FALSE);
//set log
hLog = GetDlgItem(arg->hWndDlg,IDC_LOG);
GetWindowText(hLog,buf2,sizeof(buf2));
wsprintf(subStr,"#复制文件【】到【】...\r\n");
strcat(buf2,subStr);
SetWindowText(hLog,buf2);
}
}
else
{
MessageBox(NULL,NULL,"无法打开Device.ini文件",MB_ICONINFORMATION);
}
}
// 替换字符串中特征字符串为指定字符串
int ReplaceStr(char *sSrc, char *sMatchStr, char *sReplaceStr)
{
int StringLen;
char caNewString[1024];
char *FindPos = strstr(sSrc, sMatchStr);
if( (!FindPos) || (!sMatchStr) )
return -1;
while( FindPos )
{
memset(caNewString, 0, sizeof(caNewString));
StringLen = FindPos - sSrc;
strncpy(caNewString, sSrc, StringLen);
strcat(caNewString, sReplaceStr);
strcat(caNewString, FindPos + strlen(sMatchStr));
strcpy(sSrc, caNewString);
FindPos = strstr(sSrc, sMatchStr);
}
return 0;
}
LPTSTR ReadConfigFile(LPTSTR key)
{
HANDLE hFile = CreateFile(configFileName,GENERIC_READ,FILE_SHARE_WRITE,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
err=GetLastError();
CloseHandle(hFile);
if(err == 2) // file not exists
{
HANDLE hFile = CreateFile(configFileName,GENERIC_WRITE,FILE_SHARE_WRITE,NULL,CREATE_NEW,FILE_ATTRIBUTE_NORMAL,NULL);
CloseHandle(hFile);
// err=GetLastError();
// sprintf(buf,"%d",err);
// MessageBox(NULL,buf,NULL,0);
}
else
{
//load config to app
GetPrivateProfileString("config","filelist","",bufFileList,sizeof(bufFileList),configFileName);
GetPrivateProfileString("config","dstdir","",bufDstDir,sizeof(bufDstDir),configFileName);
ReplaceStr(bufFileList,";","\r\n");
if(strcmp(key,"filelist") == 0)
return bufFileList;
if(strcmp(key,"dstdir") == 0)
return bufDstDir;
}
return NULL;
}
BOOL WriteConfigFile(TCHAR *bufFileList,TCHAR *bufDstDir)
{
ReplaceStr(bufFileList,"\r\n",";");
i=WritePrivateProfileString("config","filelist",bufFileList,configFileName);
WritePrivateProfileString("config","dstdir",bufDstDir,configFileName);
return TRUE;
}
/*------------------------------------------------------------------
FirstDriveFromMask (unitmask)
Description
Finds the first valid drive letter from a mask of drive letters.
The mask must be in the format bit 0 = A, bit 1 = B, bit 2 = C,
and so on. A valid drive letter is defined when the
corresponding bit is set to 1.
Returns the first drive letter that was found.
--------------------------------------------------------------------*/
char FirstDriveFromMask (ULONG unitmask)
{
char i;
for (i = 0; i < 26; ++i)
{
if (unitmask & 0x1)
break;
unitmask = unitmask >> 1;
}
return (i + 'A');
}
int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow )
{
DialogBox(hInstance, MAKEINTRESOURCE(IDD_MAIN),
hWnd, DlgProc);
return 0;
}
//---------------------------------------------------------------------------
LRESULT CALLBACK DlgProc(HWND hWndDlg, UINT Msg, WPARAM wParam, LPARAM lParam)
{
hFileList = GetDlgItem(hWndDlg,IDC_FILE_LIST);
hDstDir = GetDlgItem(hWndDlg,IDC_DST_DIR);
hLog = GetDlgItem(hWndDlg,IDC_LOG);
hBtnSave = GetDlgItem(hWndDlg,IDC_BTN_SAVE);
hBtnBrowse = GetDlgItem(hWndDlg,IDC_BTN_BROWSE);
switch(Msg)
{
case WM_INITDIALOG:
//icon setting
hIcon = (HICON)LoadIcon(GetModuleHandle(NULL),MAKEINTRESOURCE(IDI_ICON4));
SendMessage(hWndDlg, WM_SETICON, ICON_BIG , (LPARAM)hIcon);
hIconSm = (HICON)LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_ICON4));
SendMessage(hWndDlg, WM_SETICON, ICON_SMALL, (LPARAM)hIconSm);
//read config file , if not exist, create a new one
SetWindowText(hFileList,ReadConfigFile("filelist"));
SetWindowText(hDstDir,ReadConfigFile("dstdir"));
SetWindowText(hLog,"#等待设备...\r\n");
return TRUE;
case WM_DEVICECHANGE:
dhr = (DEV_BROADCAST_HDR *)lParam;
switch(wParam)
{
case DBT_CONFIGCHANGECANCELED:
return 0;
case DBT_DEVICEARRIVAL:
if(dhr->dbch_devicetype == DBT_DEVTYP_VOLUME)
{
lpdbv = (PDEV_BROADCAST_VOLUME)dhr;
if(lpdbv->dbcv_flags == 0)
{
//sprintf(buf,"%c",FirstDriveFromMask(lpdbv->dbcv_unitmask));
pArgs arg;
arg = malloc(sizeof(struct ArgsTag));
GetWindowText(hLog,buf2,sizeof(buf2));
arg->vol= FirstDriveFromMask(lpdbv->dbcv_unitmask);
arg->hWndDlg = hWndDlg;
wsprintf(subStr,"#检测盘符...【%c】盘\r\n",arg->vol);
strcat(buf2,subStr);
SetWindowText(hLog,buf2);
Sleep(1000);
//UsbCopyFile(ReadConfigFile("filelist"),ReadConfigFile("dstdir"), vol);
_beginthread ((LPVOID)CopyThread, 0, (LPVOID)arg) ;
}
}
return 0;
}
break;
case WM_COMMAND:
switch(LOWORD(wParam))
{
case IDC_FILE_LIST:
if(HIWORD(wParam) == EN_CHANGE)
{
EnableWindow(hBtnSave,TRUE);
}
return TRUE;
case IDC_DST_DIR:
if(HIWORD(wParam) == EN_CHANGE)
{
EnableWindow(hBtnSave,TRUE);
}
return TRUE;
case IDCANCEL:
EndDialog(hWndDlg, 0);
return TRUE;
case IDC_BTN_SAVE:
//content of file list
/*
i = HIWORD(wParam);
i = LOWORD(wParam);
i = lParam;
*/
GetWindowText(hFileList,bufFileList,sizeof(bufFileList)/sizeof(TCHAR));
GetWindowText(hDstDir,bufDstDir,sizeof(bufDstDir)/sizeof(TCHAR));
//write config
WriteConfigFile(bufFileList,bufDstDir);
EnableWindow(hBtnSave,FALSE);
return TRUE;
case IDC_BTN_BROWSE:
//ZeroMemory(szPath, sizeof(szPath));
ZeroMemory(&bi,sizeof(BROWSEINFO));
bi.hwndOwner = NULL; //HWND句柄
bi.pidlRoot = NULL; //默认值为NULL
bi.lpszTitle = ("文件浏览对话框"); //对话框标题
bi.pszDisplayName = szPath; //选择文件夹路径
bi.ulFlags = BIF_RETURNONLYFSDIRS; //标记
bi.lpfn = NULL; //默认值为NULL
bi.lParam = 0; //回调消息
lpItemIdList = SHBrowseForFolder(&bi); //显示文件浏览对话框
if(SHGetPathFromIDList(lpItemIdList,szPath))
SetWindowText(hDstDir,szPath);
return TRUE;
}
break;
}//end of Msg
return FALSE;
}
//---------------------------------------------------------------------------
RESOURCE.H
//{{NO_DEPENDENCIES}}
// Microsoft Developer Studio generated include file.
// Used by UsbAutoCopy.rc
//
#define IDD_MAIN 101
#define IDI_ICON1 102
#define IDI_ICON2 103
#define IDI_ICON3 104
#define IDI_ICON4 110
#define IDC_EDIT1 1000
#define IDC_FILE_LIST 1000
#define IDC_EDIT2 1001
#define IDC_LOG 1001
#define IDC_EDIT3 1002
#define IDC_DST_DIR 1002
#define IDC_BUTTON1 1003
#define IDC_BTN_BROWSE 1003
#define IDC_BUTTON2 1004
#define IDC_BTN_SAVE 1004
// Next default values for new objects
//
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS
#define _APS_NEXT_RESOURCE_VALUE 111
#define _APS_NEXT_COMMAND_VALUE 40002
#define _APS_NEXT_CONTROL_VALUE 1005
#define _APS_NEXT_SYMED_VALUE 101
#endif
#endif
UsbAutoCopy.rc ：资源脚本
//Microsoft Developer Studio generated resource script.
//
#include "resource.h"
#define APSTUDIO_READONLY_SYMBOLS
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 2 resource.
//
#include "afxres.h"
/////////////////////////////////////////////////////////////////////////////
#undef APSTUDIO_READONLY_SYMBOLS
/////////////////////////////////////////////////////////////////////////////
// Chinese (P.R.C.) resources
#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_CHS)
#ifdef _WIN32
LANGUAGE LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED
#pragma code_page(936)
#endif //_WIN32
#ifdef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// TEXTINCLUDE
//
1 TEXTINCLUDE DISCARDABLE
BEGIN
"resource.h\0"
END
2 TEXTINCLUDE DISCARDABLE
BEGIN
"#include ""afxres.h""\r\n"
"\0"
END
3 TEXTINCLUDE DISCARDABLE
BEGIN
"\r\n"
"\0"
END
#endif // APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// Dialog
//
IDD_MAIN DIALOG DISCARDABLE 200, 150, 449, 271
STYLE DS_MODALFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_POPUP |
WS_CAPTION | WS_SYSMENU
CAPTION "USB AutoCopy"
FONT 8, "MS Sans Serif"
BEGIN
GROUPBOX "设置",IDC_STATIC,8,8,181,255
GROUPBOX "日志",IDC_STATIC,201,8,240,255
EDITTEXT IDC_FILE_LIST,18,37,160,134,ES_MULTILINE |
ES_AUTOHSCROLL | ES_WANTRETURN | NOT WS_BORDER
EDITTEXT IDC_LOG,213,25,220,227,ES_MULTILINE | ES_AUTOVSCROLL |
ES_AUTOHSCROLL | ES_WANTRETURN | NOT WS_BORDER |
WS_VSCROLL | WS_HSCROLL
EDITTEXT IDC_DST_DIR,18,198,110,14,ES_AUTOHSCROLL | ES_READONLY
PUSHBUTTON "浏览",IDC_BTN_BROWSE,128,198,50,14
PUSHBUTTON "保存设置",IDC_BTN_SAVE,21,234,147,20
CONTROL "文件列表",IDC_STATIC,"Static",SS_LEFTNOWORDWRAP |
WS_GROUP,18,25,160,8
LTEXT "复制到目录",IDC_STATIC,18,185,110,8
END
/////////////////////////////////////////////////////////////////////////////
//
// DESIGNINFO
//
#ifdef APSTUDIO_INVOKED
GUIDELINES DESIGNINFO DISCARDABLE
BEGIN
IDD_MAIN, DIALOG
BEGIN
LEFTMARGIN, 8
RIGHTMARGIN, 441
TOPMARGIN, 8
BOTTOMMARGIN, 263
END
END
#endif // APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// Icon
//
// Icon with lowest ID value placed first to ensure application icon
// remains consistent on all systems.
IDI_ICON4 ICON DISCARDABLE "Device-USB.ico"
#endif // Chinese (P.R.C.) resources
/////////////////////////////////////////////////////////////////////////////
#ifndef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 3 resource.
//
/////////////////////////////////////////////////////////////////////////////
#endif // not APSTUDIO_INVOKED
2 个答案:
答案 0 :(得分：1)
现在您已经更新了代码，问题就更清晰了：
arg = malloc(sizeof(args));
表示分配了sizeof（args）。由于您将args作为指针键入struct args，这意味着只分配了4个字节（假设为32位）。这对于struct的第一个字段就足够了，但是当你这样做时：
arg->hWndDlg = hWndDlg;
你写的超出了分配的记忆，在某些人的土地上。
要解决您的问题，您应该使用malloc（sizeof（struct args）），它是sizeof（CHAR）+ sizeof（HWND），而不是sizeof（struct args *）。或者，更好的是，更改你的typedef，以减少错误，例如：
typedef struct ArgsTag {
CHAR vol;
HWND hWndDlg;
} Args, *ArgsPtr;
左右，然后使用Args进行分配，使用ArgsPtr进行访问。
答案 1 :(得分：0)
如果你得到正确的卷，那么这意味着你至少部分地正确地初始化结构。检查以确保您复制的HWND与实际HWND相同。如果您正在创建无模式对话框，则返回为HWND。如果你正在创建一个模态，那么你可以使用DialogBoxParam（）传入指向结构的指针，然后可以在WM_INITDIALOG中初始化。
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