透明

[liumang12]

让某个软件整个窗体中所有的内容透明 就是相当于看不到那个软件，但是又要已经打开,怎么实现呢？

[goosen]

隐藏窗口不就行拉...一定要透明 吗.. 按下F10 隐藏 显示

'窗口中
Dim Hook As Long
Private Sub Form_Load()
Hook = SetWindowsHookEx(WH_KEYBOARD_LL, AddressOf HookFunc, App.hInstance, 0)
End Sub

Private Sub Form_Unload(Cancel As Integer)
If Hook <> 0 Then UnhookWindowsHookEx Hook
End Sub

'模块中:
'添加一模块:Module1.bas

Public Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Public Declare Function GetKeyState Lib "user32" (ByVal nVirtKey As Long) As Integer
Public Declare Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" (ByVal idHook As Long, ByVal lpfn As Long, ByVal hmod As Long, ByVal dwThreadId As Long) As Long
Public Declare Function CallNextHookEx Lib "user32" (ByVal hHook As Long, ByVal nCode As Long, ByVal wParam As Long, lParam As Any) As Long
Public Declare Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As Long) As Long
Public Const HC_ACTION = 0
Public Const WM_KEYDOWN = &H100
Public Const WM_KEYUP = &H101
Public Const WM_SYSKEYDOWN = &H104
Public Const WM_SYSKEYUP = &H105
Public Const VK_TAB = &H9
Public Const VK_CONTROL = &H11
Public Const VK_ESCAPE = &H1B

Public Const WH_KEYBOARD_LL = 13
Public Const LLKHF_ALTDOWN = &H20

Public Type KBDLLHOOKSTRUCT
 vkCode As Long
 scanCode As Long
 flags As Long
 time As Long
 dwExtraInfo As Long
End Type

Dim p As KBDLLHOOKSTRUCT

Public Function HookFunc(ByVal nCode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
 Dim f As Boolean
  
 If (nCode = HC_ACTION) Then
 If wParam = WM_KEYDOWN Or wParam = WM_SYSKEYDOWN Then
 CopyMemory p, ByVal lParam, Len(p)
  
 If p.vkCode = 121 Then
 Form1.Visible = Not Form1.Visible '如果按下"F10"键则显示或隐藏窗口
 End If
  
 End If
 End If
  
  
  
 HookFunc = CallNextHookEx(0, nCode, wParam, ByVal lParam)
  
End Function