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lhb_780902 2002-10-24
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在Debug窗口输出信息
YP2002CN 2002-10-24
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TRACE在DEBGU版下向vc的output窗口输出一条信息
TRACE(_T("error!"));用來調適用的.程序原可以在程序中可疑的地方加入信息代碼來檢測程序執行過程的正確性
要注意的是:TRACE(a);//CString a;
這個a不能超過256個子符.
所以一般用TRACE(a.Left(200));來代替.
TRACE(_T("error!"));用來調適用的.程序原可以在程序中可疑的地方加入信息代碼來檢測程序執行過程的正確性
要注意的是:TRACE(a);//CString a;
這個a不能超過256個子符.
所以一般用TRACE(a.Left(200));來代替.
stonespace 2002-10-24
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编译如果出错，显示错误信息的窗口就是output窗口。
wfglyy 2002-10-24
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vc的output窗口 在哪个地方?
stonespace 2002-10-24
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TRACE在DEBGU版下向vc的output窗口输出一条信息，参数格式和printf一样。release版下不做任何事情也不生成任何代码。
用来在调试的时候输出信息。
用来在调试的时候输出信息。
qing_li73 2002-10-24
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See more details via MSDN
qing_li73 2002-10-24
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TRACE
TRACE( exp )
Parameters
exp
Specifies a variable number of arguments that are used in exactly the same way that a variable number of arguments are used in the run-time function printf.
Remarks
Provides similar functionality to the printf function by sending a formatted string to a dump device such as a file or debug monitor. Like printf for C programs under MS-DOS, the TRACE macro is a convenient way to track the value of variables as your program executes. In the Debug environment, the TRACE macro output goes to afxDump. In the Release environment, it does nothing.
TRACE is limited to sending a total of 512 characters at a time. If you call TRACE with formatting commands, the total string length after the formatting commands have been expanded cannot be more than 512 characters, including the terminating NULL. Exceeding this limit causes an ASSERT.
Note This macro is available only in the debug version of MFC.
For more information, seeMFC Debugging Support in Visual C++ Programmer’s Guide.
Example
// example for TRACE
int i = 1;
char sz[] = "one";
TRACE( "Integer = %d, String = %s\n", i, sz );
// Output: 'Integer = 1, String = one'
See Also TRACE0, TRACE1, TRACE2, TRACE3, AfxDump, afxTraceEnabled
TRACE( exp )
Parameters
exp
Specifies a variable number of arguments that are used in exactly the same way that a variable number of arguments are used in the run-time function printf.
Remarks
Provides similar functionality to the printf function by sending a formatted string to a dump device such as a file or debug monitor. Like printf for C programs under MS-DOS, the TRACE macro is a convenient way to track the value of variables as your program executes. In the Debug environment, the TRACE macro output goes to afxDump. In the Release environment, it does nothing.
TRACE is limited to sending a total of 512 characters at a time. If you call TRACE with formatting commands, the total string length after the formatting commands have been expanded cannot be more than 512 characters, including the terminating NULL. Exceeding this limit causes an ASSERT.
Note This macro is available only in the debug version of MFC.
For more information, seeMFC Debugging Support in Visual C++ Programmer’s Guide.
Example
// example for TRACE
int i = 1;
char sz[] = "one";
TRACE( "Integer = %d, String = %s\n", i, sz );
// Output: 'Integer = 1, String = one'
See Also TRACE0, TRACE1, TRACE2, TRACE3, AfxDump, afxTraceEnabled
