ProgressBar控件跟上一文介紹的TrackBar控件一樣，并沒有提供一個方法可以方便的實現重繪，需要自己重載WM_PAINT消息來實現重繪。先來看看最終實現的效果：

　　為了讓ProgressBar控件可以顯示進度完成的信息，添加了一個屬性：FormatString來格式化進度條完成信息，通過這個屬性，可以定義自己需要顯示什么樣式的信息，默認為：{0:0.0%}，即顯示：50.0%。來看看類視圖：

　　ProgressBar控件的繪制需要處理兩種樣式，一種是連續的顯示((ProgressBarStyle.Continuous)，一種是不停的滾動顯示(ProgressBarStyle.Marquee)。繪制沒有什么特別難的地方，就是需要自己計算已完成進度對應的控件的位置，繪制滾動樣式的的時候，需要通過一個定時器(Timer)定時改變滾動條的位置和刷新控件。特別的是，這次利用BufferedGraphics來實現雙緩沖，效果也還不錯。ProgressBar控件主要是通過DrawProgressBar函數來繪制的，來看看這個函數的代碼：

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}

　　 ProgressBar控件的美化就為你介紹到這里，希望對你了解ProgressBar控件的美化換膚有所幫助。