双缓冲\test\res\1.bmp ......\....\...\test.ico ......\....\resource.h ......\....\stdafx.cpp ......\....\stdafx.h ......\....\test.cpp ......\....\test.h ......\....\test.rc ......\....\test.vcproj ......\....\testDlg.cpp ......\....\testDlg.h ......\test.sln ......\....\res ......\test 双缓冲