GetWindowLong
代码说明：
一个VB6消息相关源码下载，截取消息,并将消息交给wndproc过程处理.取消消息截取，结束子分类过程.Module1.bas中，定义全局变量,存放控件标志性数据，wndproc函数就是用来接收子类时截取的消息的，将截取下来的消息存放在msg参数中.检测到消息,就可以加入处理代码。需要注意,如果这儿不加入任何代码,则相当于吃掉了这条消息(A message related VB6 source code download, intercept messages and the processing of the message to wndproc Cancel message interception, ending the process of sub-classification. Module1.bas, the definition of global variables, data storage control signs, wndproc function is used to receive child when class intercepted message, the message will be stored in the interception down the msg parameter. detected a message, you can add processing code. Note that if you do not add any code here, is the equivalent of eating this message)
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