TRACE()函数是干什么的?
比如说:
TRACE("\n%d\n",bmih.biSizeImage);
什么意思?
欢迎各位大虾前来蹂腻本题!!!!!!!!!!
比如说:
TRACE("\n%d\n",bmih.biSizeImage);
什么意思?
欢迎各位大虾前来蹂腻本题!!!!!!!!!!
解决方案 »
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output窗口显示出来比如
TRACE("\n a = %d \n",123);那么运行到那个地方,输出窗口显示a = 123这个信息可以用来跟踪变量的值啊什么的,
还有没有别的意思?
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
在release的时候不会起作用