Release Mutex

问题引入： dll有一个导出函数，函数参数是string&，string在函数内部被=赋值。在exe动态加载此dll，调用此导出函数后，会崩溃。 原因： 如果任何STL类的实现中使用了静态变量（我们无从得知但map、string存在此问题），且编译dll时，vc的运行库设置为MT或MTd，会静态链接VC的运行时库，这会导致采用静态链接的方式将导致生成的目标模块拥有独立的堆栈空间。即此静态变量在dll中有独立的一份，在任何加载此dll的exe中，也有独立的一份。 由于"谁申请，谁释放"的原则，如果按照上面的情景，由于string在dll的函数内部被赋值，因此是由dll去申请的内存。但是因为string&传递了出去，在exe中使用，是由exe释放的string。因此会导致崩溃。 解决方法： 方法1.如果任何STL类内部使用了静态变量（无论是直接还是间接使用），那么就不要再写出跨执行单元访问它的代码。 方法2.对于跨模块使用string&，改为使用WCHAR* 方法3.编译dll时，修改vc的运行库为MD或MDd，这样堆栈空间就是共享的了。 /MD 与 /MT、/MTd与/MDd的区别...

Download winduino.zip - 11.2 KB Download the latest from GitHub Introduction This started on a lark. I just wanted to see if my graphics and user interface libraries would run on a Windows PC. To that end I created a mechanism by which to draw to a window using DirectX and then I tied my user interface code and graphics code into it. It wasn't very useful by itself, but I thought to myself, "hey, this could be a useful prototyping tool with a little work" and here we are.

Download winduino.zip - 11.2 KB Download the latest from GitHub Introduction This started on a lark. I just wanted to see if my graphics and user interface libraries would run on a Windows PC. To that end I created a mechanism by which to draw to a window using DirectX and then I tied my user interface code and graphics code into it. It wasn't very useful by itself, but I thought to myself, "hey, this could be a useful prototyping tool with a little work" and here we are.