https://blog.youkuaiyun.com/fly_902zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/fly_902/article/details/5778163https://blog.youkuaiyun.com/fly_902/article/details/5778163fly_902Sat, 31 Jul 2010 10:48:00 +0800在VS2005/2008中，c++对字符串的处理已经默认采用了unicode版本了。Unicode可以使你的程序能够更全面的支持多国语言文字，即使在英文，日文等系统下也不会出现乱码。而且NT内核基于Unicode，可以减少了系统的编码转换开销，提高程序运行速度，并且可以支持更多的微软新推出的仅支持Unicode的API。但是有可能会造成在95/98下程序运转不正常。写代码时应注意：1：字符串前要加上_T或者_TEXT.比如：_T(“dadad”);2：将char换成TCHAR (unsigned]]>https://blog.youkuaiyun.com/fly_902/article/details/5774948https://blog.youkuaiyun.com/fly_902/article/details/5774948fly_902Thu, 29 Jul 2010 21:48:00 +08001、 error C2668: 'sqrt' : ambiguous call to overloaded function
     在VS2005中存在sqrt函数的重载。当编译器看到sqrt(int)时，找不到相应的函数，此时存在sqrt(float)和sqrt(long double)两个函数，编译器不知道程序员需要哪个函数，就会出现错误。可以使用sqrtf( )代替。
 2、 error C2039: 'ReadHuge' : is not a member of ]]>https://blog.youkuaiyun.com/fly_902/article/details/5774946https://blog.youkuaiyun.com/fly_902/article/details/5774946fly_902Thu, 29 Jul 2010 21:47:00 +0800C++: VC6转VC8出现问题：error C2664: “fopen”: 不能将参数 1 从“CString”转换为“const char *”
其实还可能出现其它类似的问题，如：
error C2664: “fopen”: 不能将参数 1 从“CString”转换为“const char *”
error C2039: “strcpy”: 不是“ATL::CStringT”的成员
但是程序在VC6下编译得]]>https://blog.youkuaiyun.com/fly_902/article/details/5774939https://blog.youkuaiyun.com/fly_902/article/details/5774939fly_902Thu, 29 Jul 2010 21:45:00 +0800https://blog.youkuaiyun.com/fly_902/article/details/5774576https://blog.youkuaiyun.com/fly_902/article/details/5774576fly_902Thu, 29 Jul 2010 18:21:00 +0800
dllD.exp : warning LNK4070: /OUT:dll.dll directive in .EXP differs from output filename "Debug/dllD.dll"; ignoring directive
        我在DLL项目中遇到了，因为要对Debug版和Release版分别指定不同的输出文件名。对Debug版，我指定输出文件为dllD.dll，对Release版指定为dllR.dll。
        解决]]>https://blog.youkuaiyun.com/fly_902/article/details/5750356https://blog.youkuaiyun.com/fly_902/article/details/5750356fly_902Tue, 20 Jul 2010 17:30:00 +0800　　由于使用AcDbMtext的extents()方法，只能得到MTEXT的外框，得不到字体的准确宽度，下面是用AcGiTextStyle的解决方法，得到准确的字体宽度。 


HOW TO GET A TEXT STRING'S ACTUAL WIDTH 
Product AUTOCAD Author LEE,HENRY 
Date 26-MAR-99 Document ID 29095 
Expiration date Attach]]>https://blog.youkuaiyun.com/fly_902/article/details/5746760https://blog.youkuaiyun.com/fly_902/article/details/5746760fly_902Mon, 19 Jul 2010 16:21:00 +0800set]]>https://blog.youkuaiyun.com/fly_902/article/details/5733383https://blog.youkuaiyun.com/fly_902/article/details/5733383fly_902Wed, 14 Jul 2010 09:31:00 +0800ARX中常用的选择实体的函数有几种：
1、acedSSGet
   相应的函数用到的函数有：acedSSLength 、acedSSName、acdbGetObjectId、acdbOpenAcDbEntity。。。acedSSFree
  使用此数函数，最后必须用acedSSFree释放其选择集内存。
2、acedEntSel
 
各自用法的源代码如下：
1、acedssGet
ads_name ssName; ]]>https://blog.youkuaiyun.com/fly_902/article/details/5733297https://blog.youkuaiyun.com/fly_902/article/details/5733297fly_902Wed, 14 Jul 2010 09:01:00 +0800BOOL CDlgCADJSQ::IsNumeric(CString str) { int Length = str.GetLength(); int i; char ch; for(i=0; i']]>https://blog.youkuaiyun.com/fly_902/article/details/5733291https://blog.youkuaiyun.com/fly_902/article/details/5733291fly_902Wed, 14 Jul 2010 08:57:00 +0800https://blog.youkuaiyun.com/fly_902/article/details/5715120https://blog.youkuaiyun.com/fly_902/article/details/5715120fly_902Tue, 06 Jul 2010 09:24:00 +0800https://blog.youkuaiyun.com/fly_902/article/details/5715104https://blog.youkuaiyun.com/fly_902/article/details/5715104fly_902Tue, 06 Jul 2010 09:17:00 +0800代码其实很简单 如下：
int Commonlib::CreateNewDwg() { CString acadPath; GetAcadPath(acadPath);//得到CAD路径 CString t = "acadiso.dwt"; t.Format("%s//Template//acadiso.dwt",acadPath); acDocManager->appContextNewDocument(t.LockBuffer()); return 1; ]]>https://blog.youkuaiyun.com/fly_902/article/details/5712248https://blog.youkuaiyun.com/fly_902/article/details/5712248fly_902Sun, 04 Jul 2010 18:02:00 +0800 俺的数据库连接终于完成了。不过，是看懂了源代码的使用方法。 呵呵。 直接复制粘贴过来的而已。 俺用代码从不局限于是否是自己的写的，只要能帮我完成我要完成的功能就行。 
 
再过几天俺的专业课就要考试了。 ]]>https://blog.youkuaiyun.com/fly_902/article/details/5710724https://blog.youkuaiyun.com/fly_902/article/details/5710724fly_902Sat, 03 Jul 2010 13:28:00 +0800https://blog.youkuaiyun.com/fly_902/article/details/5355375https://blog.youkuaiyun.com/fly_902/article/details/5355375fly_902Mon, 08 Mar 2010 10:13:00 +0800https://blog.youkuaiyun.com/fly_902/article/details/5355368https://blog.youkuaiyun.com/fly_902/article/details/5355368fly_902Mon, 08 Mar 2010 10:12:00 +0800https://blog.youkuaiyun.com/fly_902/article/details/5355307https://blog.youkuaiyun.com/fly_902/article/details/5355307fly_902Mon, 08 Mar 2010 09:59:00 +0800https://blog.youkuaiyun.com/fly_902/article/details/5355297https://blog.youkuaiyun.com/fly_902/article/details/5355297fly_902Mon, 08 Mar 2010 09:57:00 +0800https://blog.youkuaiyun.com/fly_902/article/details/5352279https://blog.youkuaiyun.com/fly_902/article/details/5352279fly_902Sat, 06 Mar 2010 17:15:00 +0800https://blog.youkuaiyun.com/fly_902/article/details/5351396https://blog.youkuaiyun.com/fly_902/article/details/5351396fly_902Sat, 06 Mar 2010 10:08:00 +0800