Qt+update函数+paintEvent事件

/**************************************************************************** ** Resource object code ** ** Created by: The Resource Compiler for Qt version 5.9.9 ** ** WARNING! All changes made in this file will be lost! *****************************************************************************/ static const unsigned char qt_resource_data[] = { // E:/qtwork/QPixmap/pixmapLoad/image/rotate180.png 0x0,0x0,0x7d,0x85, 0x89, 0x50,0x4e,0x47,0xd,0xa,0x1a,0xa,0x0,0x0,0x0,0xd,0x49,0x48,0x44,0x52,0x0, 0x0,0x1,0x90,0x0,0x0,0x1,0x90,0x8,0x3,0x0,0x0,0x0,0xb7,0x61,0xc6,0xfe, 0x0,0x0,0x0,0x4,0x67,0x41,0x4d,0x41,0x0,0x0,0xb1,0x8f,0xb,0xfc,0x61,0x5, 0x0,0x0,0x0,0x1,0x73,0x52,0x47,0x42,0x0,0xae,0xce,0x1c,0xe9,0x0,0x0,0x3, 0x0,0x50,0x4c,0x54,0x45,0x47,0x70,0x4c,0x26,0x21,0x21,0x24,0x1a,0x19,0x20,0x1c, 0x1d,0x3d,0x2b,0x31,0x28,0x1e,0x21,0x2b,0x23,0x25,0x81,0x6a,0x6b,0x3b,0x2a,0x2c, 0x34,0x24,0x28,0x1d,0x19,0x18,0x18,0x14,0x13,0x4c,0x4b,0x56,0x1f,0x1b,0x1a,0x62, 0x5b,0x7f,0xe0,0xd2,0xc5,0x50,0x50,0x5e,0x1f,0x1c,0x1b,0xa,0x7,0x6,0xf,0xc, 0xa,0x16,0x13,0x11,0x11,0xf,0xe,0x50,0x48,0x54,0x10,0xd,0xc,0x19,0x15,0x13, 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