SQLConfigDataSource(NULL,ODBC_ADD_DSN,"Microsoft Access Driver (*.mdb)",
"DSN=Personnel\0"
"DBQ=C:\\My Documents\\dq.mdb\0"
"DefaultDir=C:\\My Documents\0"
"Driver={Microsoft Access Driver (*.mdb)}\0"
"DriverId=790\0"
"Deleted=1\0"
"Description=ODBC数据源\0"
"FileType=Access\0"
"JetIniPath=odbcddp.ini\0"
"MaxScanRows=20\0"
"MaxBufferSize=512"
"ImplicitCommitSync=No\0"
"UserCommitSync=No\0"
"Exclusive=1\0"//独占
"ReadOnly=1\0"//只读
"UID=Smith\0"
"SafeTransactions=0\0"
"PWD=Sesame\0"
"DATABASE=dq\0"
"ExtendedAnsiSQL=1\0"
"Statistics=0\0"
"\0")
出错:
InstallDlg.obj : error LNK2001: unresolved external symbol _SQLConfigDataSource@16
Debug/Install.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.
怎么回事?
CFile file;
if(file.Open("Finder.exe",CFile::modeRead))
{
::CopyFile("Finder.exe","D:\\1\\Finder.exe",TRUE);
AfxMessageBox("成功安装");
}
else
AfxMessageBox("没有此文件");
虽然“成功安装”,其实并没有成功!为什么?
"DSN=Personnel\0"
"DBQ=C:\\My Documents\\dq.mdb\0"
"DefaultDir=C:\\My Documents\0"
"Driver={Microsoft Access Driver (*.mdb)}\0"
"DriverId=790\0"
"Deleted=1\0"
"Description=ODBC数据源\0"
"FileType=Access\0"
"JetIniPath=odbcddp.ini\0"
"MaxScanRows=20\0"
"MaxBufferSize=512"
"ImplicitCommitSync=No\0"
"UserCommitSync=No\0"
"Exclusive=1\0"//独占
"ReadOnly=1\0"//只读
"UID=Smith\0"
"SafeTransactions=0\0"
"PWD=Sesame\0"
"DATABASE=dq\0"
"ExtendedAnsiSQL=1\0"
"Statistics=0\0"
"\0")
出错:
InstallDlg.obj : error LNK2001: unresolved external symbol _SQLConfigDataSource@16
Debug/Install.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.
怎么回事?
CFile file;
if(file.Open("Finder.exe",CFile::modeRead))
{
::CopyFile("Finder.exe","D:\\1\\Finder.exe",TRUE);
AfxMessageBox("成功安装");
}
else
AfxMessageBox("没有此文件");
虽然“成功安装”,其实并没有成功!为什么?
加上
#include <afxdb.h>
::CopyFile("Finder.exe","D:\\1\\Finder.exe",TRUE);
你并未判断CopyFile 是否成功。
如果你只是想拷贝文件的话,这样就行了
if(::CopyFile("Finder.exe","D:\\1\\Finder.exe",TRUE))
{
AfxMessageBox("成功安装");
}
else
AfxMessageBox("没有此文件");
CFile file;
if(file.Open("Finder.exe",CFile::modeRead))
{
file.Close();
::CopyFile("Finder.exe","D:\\1\\Finder.exe",TRUE);
AfxMessageBox("成功安装");
}
else{
file.Close()
AfxMessageBox("没有此文件");
}
---------------
DWORD SearchPath(
LPCTSTR lpPath, // search path
LPCTSTR lpFileName, // file name
LPCTSTR lpExtension, // file extension
DWORD nBufferLength, // size of buffer
LPTSTR lpBuffer, // found file name buffer
LPTSTR *lpFilePart // file component
);
------------------------
char buffer[MAX_PATH];
char *p;
if(::SearchPath("D:\\1","Finder.exe",0,MAX_PATH,buffer,&p)>0)
{
::CopyFile("Finder.exe","D:\\1\\Finder.exe",TRUE);
AfxMessageBox("成功安装");}
if (!finder.FindFile ("Finder.exe")){
AfxMessageBox("没有此文件");
return;
}
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----------------------
http://expert.csdn.net/Expert/topic/1189/1189504.xml?temp=.4786493
http://expert.csdn.net/Expert/topic/1092/1092602.xml?temp=.8103754