在FormCreate事件里面调用ShowMessage或者MessageBox，但在弹出Message后，如果马上按确定，程序正常，但如果稍等两三秒后，就会出现： Access violation at address XXXXXXX in module 'vcl50.bpl'. Read of address 00000047. 我在FormShow函数调用就没有
在FormCreate事件里面调用ShowMessage或者MessageBox，但在弹出Message后，如果马上按确定，程序正常，但如果稍等两三秒后，就会出现：Access violation at address XXXXXXX in module 'vcl50.bpl'. Read of address 00000047.
我在FormShow函数调用就没有这种情况......
曾在CSDN的C++ builder版块中提问过，某位大大给出的原因：ShowMessage这些对话框会阻塞主进程,直到你点击确定才会继续.如果你的代码里面用到有皮肤组件等容易造成其他线程访问了没有初始化的资源造成错误.
遇到过好几次这种情况了，后面才留意了我所接触的项目里，都是将检测配置文件是否正确的代码写在FormCreate事件中，检测到错误就通过 ShowMessage或者MessageBox发出提示，从而有可能阻塞了主进程出现错误，为了防止这种情况，建议不要在FormCreate事件中弹出对话框 ，如果已经出现这种情况的，目前的解决方法有两种：
将检测配置文件是否正确的代码写在 winmain里面
有些时候不方便写在winmain，可以将其写在FormShow事件里，为了使代码尽量少改动，可使用bool blErrorFind变量，将原来在FormCreate事件里弹窗的位置改为blErrorFind = true,再在FormShow开始的地方判断blErrorFind变量，再决定是否弹出Message
mfc中线程使用messagebox也不是一个好主意，必须出错。所以最好设置一个flag，线程外弹窗。。
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