把vb自带的API声明、结构、常量等等写入tlb，利用vb6对com的支持，只需在工程里引用上tlb，tlb中的所有API声明、常数、结构就能像内部函数一样使用，不需要再额外声明，极大方便使用API(The VB's API declaration, structure, constant and so on are written to TLB, and VB6's support for com is only recommended in engineering. All API declarations, constants, and structures in TLB can be used as internal functions. No additional declaration is needed, which makes it convenient and convenient to use API.)