Qt实现在QLabel上播放视频文件，可以拖动进度条，快进倒退

[{"title":"（ 33 个子文件 6.01MB ） Qt实现在QLabel上播放视频文件，可以拖动进度条，快进倒退","children":[{"title":"myPlayer1","children":[{"title":"myPlayer1.sln <span style='color:#111;'> 1.30KB </span>","children":null,"spread":false},{"title":"myPlayer1","children":[{"title":"myplayer1.h <span style='color:#111;'> 824B </span>","children":null,"spread":false},{"title":"myplayer1.ui <span style='color:#111;'> 6.03KB </span>","children":null,"spread":false},{"title":"Resources","children":null,"spread":false},{"title":"myplayer1.cpp <span style='color:#111;'> 3.63KB </span>","children":null,"spread":false},{"title":"myplayer1.qrc <span style='color:#111;'> 69B </span>","children":null,"spread":false},{"title":"myPlayer1.vcxproj <span style='color:#111;'> 18.37KB </span>","children":null,"spread":false},{"title":"GeneratedFiles","children":[{"title":"ui_myplayer1.h <span style='color:#111;'> 8.07KB </span>","children":null,"spread":false},{"title":"Debug","children":[{"title":"moc_myplayer1.cpp <span style='color:#111;'> 4.20KB </span>","children":null,"spread":false}],"spread":true},{"title":"qrc_myplayer1.cpp <span style='color:#111;'> 1.38KB </span>","children":null,"spread":false},{"title":"Release","children":null,"spread":false}],"spread":true},{"title":"x64","children":[{"title":"Debug","children":[{"title":"moc_myplayer1.obj <span style='color:#111;'> 421.49KB </span>","children":null,"spread":false},{"title":"qrc_myplayer1.obj <span style='color:#111;'> 5.62KB </span>","children":null,"spread":false},{"title":"vc120.pdb <span style='color:#111;'> 2.03MB </span>","children":null,"spread":false},{"title":"myPlayer1.tlog","children":[{"title":"cl.command.1.tlog <span style='color:#111;'> 4.73KB </span>","children":null,"spread":false},{"title":"custombuild.read.1.tlog <span style='color:#111;'> 510B </span>","children":null,"spread":false},{"title":"CL.read.1.tlog <span style='color:#111;'> 89.92KB </span>","children":null,"spread":false},{"title":"custombuild.command.1.tlog <span style='color:#111;'> 1.90KB </span>","children":null,"spread":false},{"title":"link.read.1.tlog <span style='color:#111;'> 3.71KB </span>","children":null,"spread":false},{"title":"link.write.1.tlog <span style='color:#111;'> 924B </span>","children":null,"spread":false},{"title":"CL.write.1.tlog <span style='color:#111;'> 2.14KB </span>","children":null,"spread":false},{"title":"link.command.1.tlog <span style='color:#111;'> 2.03KB </span>","children":null,"spread":false},{"title":"myPlayer1.lastbuildstate <span style='color:#111;'> 166B </span>","children":null,"spread":false},{"title":"custombuild.write.1.tlog <span style='color:#111;'> 842B </span>","children":null,"spread":false}],"spread":false},{"title":"myplayer1.obj <span style='color:#111;'> 638.33KB </span>","children":null,"spread":false},{"title":"main.obj <span style='color:#111;'> 417.41KB </span>","children":null,"spread":false},{"title":"myPlayer1.log <span style='color:#111;'> 4.27KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"main.cpp <span style='color:#111;'> 177B </span>","children":null,"spread":false},{"title":"myPlayer1.vcxproj.user <span style='color:#111;'> 798B </span>","children":null,"spread":false},{"title":"myPlayer1.vcxproj.filters <span style='color:#111;'> 2.63KB </span>","children":null,"spread":false}],"spread":false},{"title":"x64","children":[{"title":"Debug","children":[{"title":"myPlayer1.pdb <span style='color:#111;'> 3.30MB </span>","children":null,"spread":false},{"title":"myPlayer1.ilk <span style='color:#111;'> 3.41MB </span>","children":null,"spread":false},{"title":"myPlayer1.exe <span style='color:#111;'> 220.00KB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"myPlayer1.v12.suo <span style='color:#111;'> 16.50KB </span>","children":null,"spread":false},{"title":"myPlayer1.sdf <span style='color:#111;'> 22.06MB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]