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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网移动版 - 专注IT技能提升

...回内部指针的地址,跟普通指针一样。 (6) 在调用ComUninitialize方法前,需要手动释放所有的全局或者静态变量。 如何手动释放呢: 设置指针指向NULL 调用Release方法,注意是要调用智能指针的Release方法,而不是内部指针的,...
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char类型移动跨平台踩过的坑 - C/C++ - 清泛网 - 专注IT技能提升

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
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Reference to \' \' is ambiguous:符号定义重复 - C/C++ - 清泛网 - 专注IT技能提升

Reference to ' ' is ambiguous:符号定义重复Reference-to-is-ambiguousReference to & 39; & 39; is ambiguous 编译错误:从字面上看就是引用某个符号(变量、类名、函数等)的定义不明确,重复。以下为可能的原因及解决方法:1、自定义的变量名 ...
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[解决]Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1....

[解决]Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1.5eclipse-Missing-Constraint原因:eclipse版本太老了,java版本太新了不匹配导致。解决:安装最新的eclipse,地址:https: www eclipse org downloads 参考:https: www eclipse org forums index php t 1...
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【解决】This is allowed only when policy CMP0079 is set to NEW. - C/C++ - 清泛网 - 专注IT技能提升

...minimum_required(VERSION 3 13) can fix the first problem 参考:https: gitlab kitware com cmake cmake - issues 19693cmake最低版本设置为3.13以上,可解决。 cmake_minimum_required(VERSION 3.13) can fix the first problem. 参考:https://gitlab.kitware.com/cmake/cmake/-/issues/1969...
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char类型移动跨平台踩过的坑 - C/C++ - 清泛网移动版 - 专注IT技能提升

char类型移动跨平台踩过的坑CFLAG-fsigned-charchar强转int时,发现在x86平台下是按照有符号处理的,但是在ARM32下被当成了无符号导致问题,ARM64正常有符号。经调查,在PC上,char类型默认为signed-char,但是在一些嵌入式设备 char强转...
https://www.tsingfun.com/it/cp... 

Reference to \' \' is ambiguous:符号定义重复 - C/C++ - 清泛网移动版 - 专注IT技能提升

Reference to ' ' is ambiguous:符号定义重复Reference-to-is-ambiguousReference to & 39; & 39; is ambiguous 编译错误:从字面上看就是引用某个符号(变量、类名、函数等)的定义不明确,重复。以下为可能的原因及解决方法:1、自定义的变量名 ...
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[解决]Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1....

[解决]Missing Constraint: Bundle-RequiredExecutionEnvironment: J2SE-1.5eclipse-Missing-Constraint原因:eclipse版本太老了,java版本太新了不匹配导致。解决:安装最新的eclipse,地址:https: www eclipse org downloads 参考:https: www eclipse org forums index php t 1...
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【解决】This is allowed only when policy CMP0079 is set to NEW. - C/C+...

...minimum_required(VERSION 3 13) can fix the first problem 参考:https: gitlab kitware com cmake cmake - issues 19693cmake最低版本设置为3.13以上,可解决。 cmake_minimum_required(VERSION 3.13) can fix the first problem. 参考:https://gitlab.kitware.com/cmake/cmake/-/issues/1969...
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C#科学计数法转换decimal出错 - .NET(C#) - 清泛IT论坛,有思想、有深度

decimal scientific = decimal.Parse("2.1021E-05") 执行发生异常:“未经处理的异常:  System.FormatException: 输入字符串的格式不正确。” 解决方法: decimal  scientific = decimal.Parse("2.1021E-05", System.Globalization.NumberS...