单击按钮在固定位置创建子窗口，单击父窗口的时自动隐藏子窗口.

[{"title":"（ 14 个子文件 20KB ） 单击按钮在固定位置创建子窗口，单击父窗口的时自动隐藏子窗口.","children":[{"title":"Position","children":[{"title":"stdafx.cpp <span style='color:#111;'> 139B </span>","children":null,"spread":false},{"title":"DlgChild.h <span style='color:#111;'> 443B </span>","children":null,"spread":false},{"title":"res","children":[{"title":"Position.rc2 <span style='color:#111;'> 364B </span>","children":null,"spread":false},{"title":"Position.ico <span style='color:#111;'> 21.12KB </span>","children":null,"spread":false}],"spread":true},{"title":"stdafx.h <span style='color:#111;'> 2.43KB </span>","children":null,"spread":false},{"title":"DlgChild.cpp <span style='color:#111;'> 835B </span>","children":null,"spread":false},{"title":"PositionDlg.h <span style='color:#111;'> 708B </span>","children":null,"spread":false},{"title":"Position.vcproj <span style='color:#111;'> 5.48KB </span>","children":null,"spread":false},{"title":"PositionDlg.cpp <span style='color:#111;'> 3.69KB </span>","children":null,"spread":false},{"title":"Position.sln <span style='color:#111;'> 880B </span>","children":null,"spread":false},{"title":"resource.h <span style='color:#111;'> 955B </span>","children":null,"spread":false},{"title":"Position.rc <span style='color:#111;'> 5.25KB </span>","children":null,"spread":false},{"title":"Position.h <span style='color:#111;'> 453B </span>","children":null,"spread":false},{"title":"Position.cpp <span style='color:#111;'> 1.64KB </span>","children":null,"spread":false}],"spread":false}],"spread":true}]