文件名称:h
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1. 编制应用程序，可使用鼠标在客户区绘制出若干矩形，注意图形的保存与重绘。
2. 编制应用程序，可使用上下左右四个方向键控制矩形的移动，要求：不能使矩形移动到客户区以外。
-1. Preparation of the application, the client can use the mouse to draw a number of rectangular areas, drawing attention to the preservation and redraw. 2. Preparation of the application, use the arrow keys to control up and down about four rectangular movement requirements: not to move to the client area outside the rectangle.
2. 编制应用程序，可使用上下左右四个方向键控制矩形的移动，要求：不能使矩形移动到客户区以外。
-1. Preparation of the application, the client can use the mouse to draw a number of rectangular areas, drawing attention to the preservation and redraw. 2. Preparation of the application, use the arrow keys to control up and down about four rectangular movement requirements: not to move to the client area outside the rectangle.
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h.doc