【 在 iwantfly 的大作中提到: 】
: 商业公司，采用 LGPL 协议进行 Qt开发有什么问题吗
:

去官网查了一下关于licence的ASK：
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Can I use the Community open source version to develop my commercial product?
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It depends on how you license and distribute your product. The open source version of Qt is mainly distributed under the LGPL, version 3 and GPLv2/v3. You will need to fulfill the license obligations for these licenses when using Qt in your product.

看来只要对应产品遵循开源协议就可以了。
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Why is Qt licensed also under an open source license?
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We believe in the Free Software movement where using software comes with certain rights, but also certain obligations. Use of open source licensing gives users four primary degrees of freedom when using Qt applications or devices:

The freedom to run the program for any purpose
The freedom to study how the program works and adapt it to specific needs
The freedom to redistribute copies so you can help your neighbor
The freedom to improve the program and release your improvements to the public, so that the whole community benefits
The freedoms are non-negotiable and absolute, the freedoms cannot be enjoyed selectively or partially, you also need to pass them to your users.

The Free Software community has thrived because of these rules, but there are also developers who never intend to observe or cannot comply to these rules, and thus should get a commercial license. The Qt Company exists to support both sets with the dual offering.

明确说明， 如果你的产品无法或者不愿遵循开源协议， 就需要商业licence。
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只要您的程序代码没有用到Qt公司的仅GPL授权或仅商业授权的库、代码，只用了Qt公司
的LGPL或BSD开源版权的库，那么您只需要满足LGPL的要求（如没有修改LGPL库的代码、
提供LGPL库的版权声明文本），您开发的软件就可以闭源、商业出售和申请软件著作权
。

如果您修改了Qt公司的LGPL授权的库的代码（如金山公司的WPS软件），那么，您需要把
您修改的代码开源（https://github.com/kingsoft-wps）。

如果您的程序是采用动态链接（库链接、ddl链接）的方式使用这些修改过的库，那么，
您的程序不需要开源，可以商业销售。（金山公司的WPS即是这种情况）

如果您的程序是把这些修改过的代码（源代码）一起放到你的程序项目中一起编译，这
属于静态编译，那么，按照LGPL版权规定，你的整个程序若发布给第三方使用，则整个
程序项目都需要开源。




【 在 iwantfly 的大作中提到: 】
: 商业公司，采用 LGPL 协议进行 Qt开发有什么问题吗
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FROM 119.233.243.*

Mark
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FROM 125.76.212.*

就是因为这个麻烦，所以从来没想过用qt来做东西，尽量选别的吧
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