c++ - 无法将 QString 转换为 WChar 数组

Question

QString processName = "test.exe";
QString::toWCharArray(processName);

我收到以下错误:

error: C2664: 'QString::toWCharArray' : cannot convert parameter 1 from 'QString' to 'wchar_t *'
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called

Answer 1

您使用不当。您应该在要转换的 QString 上调用 toWCharArray 并将其传递给您已分配的数组的第一个元素的指针:

wchar_t array[9];
QString processName = "test.exe";
processName.toWCharArray(array);

这会用 processName 的内容填充 array。