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CMap用法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...Y要选LPCTSTR。 遇到好几个人说CMap在用CString做key类型时有问题,说用int和DWORD就可以,用CString就不行。因此很多人推荐使用MFC中的CMapStringToPtr之类。关键是ARG_KEY要选LPCTSTR,否则编译报错。 CMap<CString, LPCTSTR, int, int> typeMap; typeM...
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MFC OnKeyDown没反应,不响应键盘操作 - C/C++ - 清泛网 - 专注C/C++及内核技术

... return __super::PreTranslateMessage(pMsg); } 深入探索该问题请移步: http://wenku.baidu.com/link?url=2eG1TLx_ARJHKO6LFtZU_u6AOv6Pw8RyemsJEXvaKYwvQRHAh43D-TnvQZvt3-U5JMZjRqE835qeArbKKscaO-YAxfwBkepkYbdbzc2iEZKMFC OnKeyDown
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HAXM 安装/启动失败? - App Inventor 2 离线版 - 清泛IT社区,为创新赋能!

... 使用 Hyper-V 加速 或 切换到 ARM 版本的模拟器。如果还有问题,可以查看 Android Studio 的 AVD Manager 里模拟器的 CPU 选项,确保选择了 x86 而不是 x86_64,或者使用 ARM 版本的系统镜像。
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MySQL check if a table exists without throwing an exception

...is the best way to check if a table exists in MySQL (preferably via PDO in PHP) without throwing an exception. I do not feel like parsing the results of "SHOW TABLES LIKE" et cetera. There must be some sort of boolean query? ...
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微博为什么限制140字(附短信70字限制考) - 闲聊区 - 清泛IT社区,为创新赋能!

问题的提出申请过那么多的微博,数申请网易微博的动机最不纯,因为它的字数限制不是传说中的140字,而是163个字。当年觉得很可爱,于是就注册了,之后再也没登录过。今天在人人网转发状态,提示我超过140字了,突然就好...
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Creating .pem file for APNS?

...ed the above steps and now its working.I have kept the certificate and the php script on my local web server (Xampp). I am able to get the device token , and i am using it in the php script. The php script is able to connect and send payload data. But still then i am not able to get the PUSH Notifi...
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Sending a JSON to server and retrieving a JSON in return, without JQuery

... } }; xhr.send(); Handling data in JSON format on the server-side using PHP &lt;?php // Handling data in JSON format on the server-side using PHP // header("Content-Type: application/json"); // build a PHP variable from JSON sent using POST method $v = json_decode(stripslashes(file_get_contents(...
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After submitting a POST form open a new window showing the result

... var urlAction = 'whatever.php'; var data = {param1:'value1'}; var $form = $('&lt;form target="_blank" method="POST" action="' + urlAction + '"&gt;'); $.each(data, function(k,v){ $form.append('&lt;input type="hidden" name="' + k + '" value="' + v ...
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Disable cache for some images

I generate some images using a PHP lib. 13 Answers 13 ...
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MySQL和MongoDB设计实例进行对比 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...档中相关说明。 MySQL需要多个表,多次查询才能搞定的问题,MongoDB只需要一个表,一次查询就能搞定,对比完成,相对MySQL而言,MongoDB显得更胜一筹,至少本例如此 MySQL MongoDB