呼叫API函式設計ABOUT視窗 (轉)

呼叫API函式設計ABOUT視窗 (轉)[@more@]設計ABOUT視窗
作者：蔡可訓 98 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6.0 通 過 調 用API 函 數 設 計 應 用 系 統 的ABOUT 窗 口。 效 果 如 圖1。( 略)
1 ． 建 立 含 有 如 下 控 件 的 窗 體：
控 件 NAME CAPTION
窗 體 FORM1 用.0 設 計ABOUT 窗 口
命 令 按 鈕 COMMAND1 關 於 銷 售 管 理 系 統

2 ． 程 序 清 單：
---- Private Declare Function GetWindow Lib "user32" (ByVal hwnd As Long, ByVal nIndex As Long) As Integer
---- Private Declare Function About Lib "shell32.dll" Alias "ShellAboutA" (ByVal hwnd As Long, ByVal szApp As String, ByVal szOtherStuff As String, ByVal hIcon As Long) As Long

---- Private Declare Function ExtractIcon Lib "shell32.dll" Alias "ExtractIconA" (ByVal hinst As Long, ByVal lpszExeFileName As String, ByVal nIconIndex As Long) As Long Private Declare Function GetDiskFreeSpace Lib "kernel32" Alias "GetDiskFreeSpaceA" (ByVal lpPathName As String, lpSectorsPerCluster As Long, lpBytesPerSector As Long, lpNumberOfFreeClusters As Long, lpTotalNumberOfClusters As Long) As Long Private Declare Function GetDriveType Lib "kernel32" Alias "GetDriveTypeA" (ByVal nDrive As String) As Long

---- Private Declare Sub GetSystemInfo Lib "kernel32" (lpSystemInfo As SYSTEM_INFO) Private Declare Function GetSystemMetrics Lib "user32" (ByVal nIndex As Long) As Long

Private Const GWL_EXSTYLE = (-20)
Private Const GWL_STYLE = (-16)
Private Const GWL_WNDPROC = (-4)
Private Const GWL_HINSTANCE = (-6)
Private Type SYSTEM_INFO
dwOemID As Long
dwPageSize As Long
lpMinimumApplicationAddress As Long
lpMaximumApplicationAddress As Long
dwActiveProcessorMask As Long
dwNumberOrfProcessors As Long
dwProcessorType As Long
dwAllocationGranularity As Long
dwReserved As Long
End Type
Private Const SM_CXSCREEN = 0
Private Const SM_CYSCREEN = 1

Private Sub Command1_Click()
Dim hinst As Long
Dim icons As Long
Dim abouts As Long
Dim dispx As String
Dim dispy As String
Dim cps As String
Dim space1 As String
Dim space2 As String
hinst = GetWindowWord(Me.hwnd, GWL_HINSTANCE)
icons = ExtractIcon(hinst, "d:fpw26foxprow.exe", 0)
Dim sysinfo As SYSTEM_INFO
Dim cls1 As Long
Dim cls2 As Long
Dim secs As Long
Dim bytes As Long
Dim buffs As String
buff = "C:"
x = GetDriveType(buffs)
x = GetDiskFreeSpace(buffs, secs, bytes, cls1, cls2)
cls1 = cls1 * secs * bytes
cls2 = cls2 * secs * bytes
space1 = "C器總共容量：
" + Format$(cls2/1024, "#, #") + "千位元組"
space2 = "C驅動器可用容量：
" + Format$(cls1/1024, "#, #") + "千位元組"
x = GetSystemMetrics(SM_CXSCREEN)
dispx = "顯示器解析度：" + Str$(x)
x = GetSystemMetrics(SM_CYSCREEN)
dispy = Str$(x)
Call GetSystemInfo(sysinfo)
Case sysinfo.dwProcessorType
Case 386
s = "型別:386"
Case 486
cpus = "處理器型別:486"
Case 586
cpus = "處理器型別:586"
End Select
abouts = ShellAbout(Me.hwnd, "演示",
"銷售管理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)
End Sub

---- 以 上 程 序 在Windows98, 6.0 FOR WINDOWS 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。