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code.language-yaml { color: rgba(24, 54, 145, 1) }
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.language-bash .token.keyword { color: rgba(0, 134, 179, 1) }
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html body h5 { font-size: 1em }
html body h6 { color: rgba(92, 92, 92, 1) }
html body strong { color: rgba(0, 0, 0, 1) }
html body del { color: rgba(92, 92, 92, 1) }
html body a:not([href]) { color: inherit; text-decoration: none }
html body a { color: rgba(0, 136, 204, 1); text-decoration: none }
html body a:hover { color: rgba(0, 163, 245, 1); text-decoration: none }
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html body li { margin-bottom: 0 }
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html body li>p { margin-top: 0; margin-bottom: 0 }
html body .task-list-item-checkbox { margin: 0 0.2em 0.25em -1.8em; vertical-align: middle }
html body .task-list-item-checkbox:hover { cursor: pointer }
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html body .highlight { margin-bottom: 16px }
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html body .highlight pre { margin-bottom: 0; word-break: normal }
html body pre code, html body pre tt { display: inline; max-width: initial; padding: 0; margin: 0; overflow: initial; line-height: inherit; word-wrap: normal; background-color: rgba(0, 0, 0, 0); border: 0 }
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.markdown-preview { width: 100%; height: 100%; box-sizing: border-box }
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.markdown-preview:not([for="preview"]) .code-chunk .status { display: none }
.markdown-preview:not([for="preview"]) .code-chunk .output-div { margin-bottom: 16px }
{ width: 8px }
{ border-radius: 10px; background-color: rgba(0, 0, 0, 0) }
{ border-radius: 5px; background-color: rgba(150, 150, 150, 0.66); border: 4px solid rgba(150, 150, 150, 0.66); background-clip: content-box }
html body[for="html-export"]:not([data-presentation-mode]) { position: relative; width: 100%; height: 100%; top: 0; left: 0; margin: 0; padding: 0; overflow: auto }
html body[for="html-export"]:not([data-presentation-mode]) .markdown-preview { position: relative; top: 0 }
@media screen and (min-width: 914px) { html body[for="html-export"]:not([data-presentation-mode]) .markdown-preview { padding: 2em calc(50% - 457px + 2em) } }
@media screen and (max-width: 914px) { html body[for="html-export"]:not([data-presentation-mode]) .markdown-preview { padding: 2em } }
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html body[for="html-export"]:not([data-presentation-mode]) #sidebar-toc-btn { position: fixed; bottom: 8px; left: 8px; font-size: 28px; cursor: pointer; color: inherit; z-index: 99; width: 32px; text-align: center; opacity: 0.4 }
html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] #sidebar-toc-btn { opacity: 1 }
html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc { position: fixed; top: 0; left: 0; width: 300px; height: 100%; padding: 32px 0 48px; font-size: 14px; box-shadow: 0 0 4px rgba(150, 150, 150, 0.33); box-sizing: border-box; overflow: auto; background-color: inherit }
{ width: 8px }
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{ border-radius: 5px; background-color: rgba(150, 150, 150, 0.66); border: 4px solid rgba(150, 150, 150, 0.66); background-clip: content-box }
html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc a { text-decoration: none }
html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .md-sidebar-toc ul { padding: 0 1.6em; margin-top: 0.8em }
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html body[for="html-export"]:not([data-presentation-mode])[html-show-sidebar-toc] .markdown-preview { left: 300px; width: calc(100% - 300px); padding: 2em calc(50% - 457px - 150px); margin: 0; box-sizing: border-box }
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html body[for="html-export"]:not([data-presentation-mode]):not([html-show-sidebar-toc]) .markdown-preview { left: 50%; transform: translateX(-50%) }
html body[for="html-export"]:not([data-presentation-mode]):not([html-show-sidebar-toc]) .md-sidebar-toc { display: none }
下载Qt
在Qt的官网上必须得登陆才能下载,这让我倍感烦躁,于是百度下找到这个链接http://download.qt.io/archive/qt/进入无需登陆即可下载,还能选择一些历史版本,因为我装了VS2015,所以我选择支持MSVC2015编译套件
的Qt:
上面两个都要安装,一个用来生成32位程序,另一个用来生成64位程序
从命令行编译Qt程序
新建一个文本文件,将其后缀改成.cpp,然后将下面代码写入其中:
#include<QApplication>
#include<QLabel> int main(int argc, char*argv[])
{
QApplication app(argc,argv);
QLabel * label = new QLabel("Hello Qt!");
label->show();
return app.exec();
}
在两个版本的Qt安装完成后,在开始菜单可以找到Qt提供的命令行工具:
一个32位的,用来生成32位的Qt程序;一个64位的,用来生成64位的Qt程序;这里我选择32位的Qt命令行工具:
这里-o参数指明了生成工程文件的名称,如果不使用-o参数指明,默认名称为当前文件夹的名称,执行qmake -project
后将生成一个后缀为.pro的工程文件,然后在执行qmake 工程文件名称.pro 命令后就生成了Makefile文件,
安装VS2015后也会有命令行工具:
因为我要生成的是32位程序,所以要使用生成32位程序的VS命令行工具来编译源码:
找不到文件,这是因为从Qt4到Qt5一些基础类模块发生了变化,Qt也给出了解决方案:
https://wiki.qt.io/Transition_from_Qt_4.x_to_Qt5
我们在工程文件中直接加入一行"QT+=widgets",或者在生成工程文件时在qmake命令后面加上这行也行:
然后在用VS的命令行工具执行nmake Debug Release同时编译调试版和发布版程序:
注意:
不要在Qt的命令行中执行nmake命令,编译时会有下面奇怪的错误:
-
不要使用生成64位程序的VS命令行工具去编译32位Qt命令行生成的Makefile,否则链接时会报错:
也不要用生成32位程序的VS命令行工具去编译64位Qt命令行生成的Makefile,否则链接时会报:
模块计算机类型“X64”与目标计算机类型“x86”冲突错误执行nmake命令后,release和debug文件夹中会有可执行文件:
双击即可运行如果运行时提示缺失Qtxxxxx.dll则需要把Qt安装目录下的bin文件夹路径添加到系统环境变量PATH中即可
我这里安装了32位和64位两个版本的qt,如果程序运行时报:
一般32位程序加载64位的依赖库,或者64位程序加载32位的依赖库时会报错;Qt的依赖库在其安装目录下的bin
文件夹下,如果当前是32位程序报这个错误时,只需要把32位Qt安装目录下的bin文件夹路径提最前面就行,
如果当前是64位程序报这个错误时,只需要把64位Qt安装目录下的bin文件夹路径提最前面就可以;