Windows图形编程的几个例子，包含显示区域、Bitmap、调色板等几个例子 -Some examples for graphical programming on windows, containing displaying region,bitmap and palette etc

编程包含一个标签和一个按钮，单击按钮时，标签的内容在“你好”和“再见”之间切换-Programming includes a label and a button, click the button, the labels in the " Hello" and " goodbye" to switch between the