Windows脚本编程核心技术精解Chapter12.pdf

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1、4684-8ch12.f.qc3/3/009:38AMPage367Chapter12GainingFullControlOverAnyWindowInThisChapterAccessanywindowdirectlyusingitshandleRetrieveanywindow’sclassnameforsafeidentificationBringawindowsafelyintotheforegroundMakewindowsinvisibleandchangewindowstyledynamical

2、lyFlashawindow’stitlebarCapturewindowcontentandsaveittodiskExplorewindowinternalsandwalkingwindowhierarchiesWindowhandlesarethekeytomanipulatinganywindow.Inthischapter,youlearnmanynewmethodsforsolvingcommonproblems.Amongthemanynewsolutions,yourscriptswillbea

3、bletoswitchwindowstotheforegroundandcaptureentirewindowcontents.FullControlOverAnyWindowWindowsareallovertheplace—theyresembleuniversecontainersforyourprogramsandplayanimportantroleinreservingspace.Surprisinglyenough,theScriptingHostdoesn’tofferanywindowsupport

4、atall.Microsoftdidn’tincludeanymethodstocontrolthesizeofwindows,movethemaround,orbringthemintotheforeground.Fortunately,theWindowsAPIcontainsnumerousfunctionstoremotecontrolanywindow.Toaccessthesefeatures,allyouneedtodoisopentheCOMprojectIhavedesignedforyou:co

5、mponentswinmanagerwinmanager.vbp.Eveneasier,youcaninstallthepreparedsoftwarepackage:installwinmanagersetup.exe.4684-8ch12.f.qc3/3/009:38AMPage368368PartIII:StartingandControllingOtherSoftware■■AccessinganywindowThefirststepintothewindowworldisaccessingindi

6、vidualwindows.Windowsadministersindividualwindowssimilartoprocesses.EachwindowhasitsindividualID,thewindowhandle.It’sjustanumber.Youhavenumerouswaystofindoutthewindowhandleofanywindow.AccessingawindowbynameIfyouknowthenameofthewindowyouwanttoaccess,useGetWindow

7、-Handle.Thefollowingexampleasksyouforawindowname.Typeinanywindowname,buttakecaretotypeinthewindownameexactlyasitappearsinthewindow’stitlebar.Thescriptreturnsthewindowclass(seeFigure12-1).‘12-1.VBSsettool=CreateObject(“window.manager”)winname=InputBox(“Pleaseent

8、erthewindownameasitappearsin”_&“itstitlebar!”)handle=tool.GetWindowHandle(winname)ifhandle=0thenMsgBox“Couldn’tfindawindownamed“””&winname&“”””elseclassname=tool.GetWindowCl