Windows98系統的許多軟件中都包含一個windows風格的about窗口，它向用戶反映了當前系統的一些基本信息，其中顯示有關windows及其應用軟件的版本、版權和系統的工作狀態等信息。筆者用VB6.0通過調用API函數設計應用系統的ABOUT窗口。
1．建立含有如下控件的窗體：
控件NAMECAPTION
窗體FORM1用VB6.0設計ABOUT窗口命令按鈕COMMAND1關於銷售管理系統
2．程序清單：
PrivateDeclareFunctionGetWindowWordLib"user32"
(ByValhwndAsLong,ByValnIndexAsLong)AsInteger
PrivateDeclareFunctionShellAboutLib
"shell32.dll"Alias"ShellAboutA"(ByValhwndAsLong,
ByValszAppAsString,ByValszOtherStuffAsString,
ByValhIconAsLong)AsLong
PrivateDeclareFunctionExtractIconLib
"shell32.dll"Alias"ExtractIconA"(ByValhinstAsLong,
ByVallpszExeFileNameAsString,ByValnIconIndexAs
Long)AsLongPrivateDeclareFunctionGetDiskFreeSpace
Lib"kernel32"Alias"GetDiskFreeSpaceA"(ByVal
lpRootPathNameAsString,lpSectorsPerClusterAsLong,
lpBytesPerSectorAsLong,lpNumberOfFreeClustersAs
Long,lpTotalNumberOfClustersAsLong)AsLongPrivate
DeclareFunctionGetDriveTypeLib"kernel32"Alias
"GetDriveTypeA"(ByValnDriveAsString)AsLong
PrivateDeclareSubGetSystemInfoLib"kernel32"
(lpSystemInfoAsSYSTEM_INFO)PrivateDeclareFunction
GetSystemMetricsLib"user32"(ByValnIndexAsLong)As
Long
PrivateConstGWL_EXSTYLE=(-20)
PrivateConstGWL_STYLE=(-16)
PrivateConstGWL_WNDPROC=(-4)
PrivateConstGWL_HINSTANCE=(-6)
PrivateTypeSYSTEM_INFO
dwOemIDAsLong
dwPageSizeAsLong
lpMinimumApplicationAddressAsLong
lpMaximumApplicationAddressAsLong
dwActiveProcessorMaskAsLong
dwNumberOrfProcessorsAsLong
dwProcessorTypeAsLong
dwAllocationGranularityAsLong
dwReservedAsLong
EndType
PrivateConstSM_CXSCREEN=0
PrivateConstSM_CYSCREEN=1
PrivateSubCommand1_Click()
DimhinstAsLong
DimiconsAsLong
DimaboutsAsLong
DimdispxAsString
DimdispyAsString
DimcpsAsString
Dimspace1AsString
Dimspace2AsString
hinst=GetWindowWord(Me.hwnd,GWL_HINSTANCE)
icons=ExtractIcon(hinst,"d:fpw26foxprow.exe",0)
DimsysinfoAsSYSTEM_INFO
Dimcls1AsLong
Dimcls2AsLong
DimsecsAsLong
DimbytesAsLong
DimbuffsAsString
buff="C:"
x=GetDriveType(buffs)
x=GetDiskFreeSpace(buffs,secs,bytes,cls1,cls2)
cls1=cls1*secs*bytes
cls2=cls2*secs*bytes
space1="C驅動器總共容量：" Format$(cls2/1024,"#,#") "千字節"
space2="C驅動器可用容量：
" Format$(cls1/1024,"#,#") "千字節"
x=GetSystemMetrics(SM_CXSCREEN)
dispx="顯示器分辨率：" Str$(x)
x=GetSystemMetrics(SM_CYSCREEN)
dispy=Str$(x)
CallGetSystemInfo(sysinfo)
SelectCasesysinfo.dwProcessorType
Case386
cpus="處理器類型:386"
Case486
cpus="處理器類型:486"
Case586
cpus="處理器類型:586"
EndSelect
abouts=ShellAbout(Me.hwnd,"演示程序",
"銷售管理系統V2.0版權所有[C]1998-1999蔡可訓"
&Chr$(13)&Chr$(10)&space1&Chr$(13)&Chr$(10)
&space2&Chr$(13)&Chr$(10)&cpus "" dispx
"*" dispy,icons)
EndSub
----以上程序在WINDOWS98,VISUALBASIC6.0FORWINDOWS環境下運行通過.用戶可以將其加入應用系統的ABOUT菜單項，通過菜單項調用它，效果更好->
