怎样使对话框关不了

Posted 2023-04-15

已经隐藏了最顶上的关闭按钮,可是按Alt+F4时还是关了.

我只想通过对话框里面的一个按钮关闭,其它关闭方式失效,怎么做?
怎样拦截啊?不是要用钩子之类的吧!能否详细点?

参考技术A 可以关闭看书要关闭的窗口，但不能令其“失效”，如果开多个窗口，可以按alt+tab键，会显示出所有巳开窗口，然后按住ALT键不入，每按一次TAB键会自动往后翻一个窗口，选到要关闭的窗口，再ALT+F4就可以啦！
如果令某个按钮“失效”，可能会涉及到注册表的修改，就算这次你改过来，以后要用的话，又要去改注册表，异常麻烦。 参考技术B 这个简单,在类成员中重载OnCancel函数

在窗口类中加入,例如CXXXDl中加入(.h文件)
virtual void OnCancel();

在实现代码,也就是cpp文件,加入
void CXXXDlg::OnCancel()

// 当你按下alt+f4就运行到这里,我们什么也不做就可以了
本回答被提问者采纳 参考技术C 重载CWnd::WindowProc

virtual LRESULT WindowProc( UINT message, WPARAM wParam, LPARAM lParam );
这样程序就什么消息都收不到了，当然也不会关了。
你也可以在这里只把关闭消息给屏蔽了。 参考技术D 在消息响应函数中，拦截ALT+F4，直接返回0就可以了 第5个回答  2008-05-04 在Closing事件里面做判断关闭原因，如果不是系统的原因就取消关闭消息！

如何该隐藏程序的进程，切让Msgbox在弹出置顶

如何让我的程序不在任务管理器的进程里显示？》。
而且要Msgbox弹出时在置顶
如果没有对Msgbox进行操作就不能进行其他动作。
（就是说如果弹的是否框，你没选是否。你点其他的东西就点不了。
就像网页中的alt对话框，如果不点掉。关网页都不行。）

哈哈.楼上的连xp都隐藏不了进程,郁闷,不过只限xp sp1和xp sp2,如果是xp sp3好像就不行了(我也没试过,我都是用的sp2),任务管理器是绝对显示不出来的,不过冰刃可以显示隐藏进程,msgbox弹出对话框本来就可以在本程序里可以置顶(就是你说的效果),不过你到其他程序里就可以点了 下面给你代码,有点长哈,没得法得,不知道是否满意呢?还有啥要求就给我发消息

模块代码:(也可以弄到窗体上,一个效果,隐藏本进程)
Option Explicit

'---------------------------------------------------------
'使用方法: call 隐藏
'---------------------------------------------------------
Private Const STATUS_INFO_LENGTH_MISMATCH = &HC0000004
Private Const STATUS_ACCESS_DENIED = &HC0000022
Private Const STATUS_INVALID_HANDLE = &HC0000008
Private Const ERROR_SUCCESS = 0&
Private Const SECTION_MAP_WRITE = &H2
Private Const SECTION_MAP_READ = &H4
Private Const READ_CONTROL = &H20000
Private Const WRITE_DAC = &H40000
Private Const NO_INHERITANCE = 0
Private Const DACL_SECURITY_INFORMATION = &H4

Private Type IO_STATUS_BLOCK
Status As Long
Information As Long
End Type

Private Type UNICODE_STRING
Length As Integer
MaximumLength As Integer
Buffer As Long
End Type

Private Const OBJ_INHERIT = &H2
Private Const OBJ_PERMANENT = &H10
Private Const OBJ_EXCLUSIVE = &H20
Private Const OBJ_CASE_INSENSITIVE = &H40
Private Const OBJ_OPENIF = &H80
Private Const OBJ_OPENLINK = &H100
Private Const OBJ_KERNEL_HANDLE = &H200
Private Const OBJ_VALID_ATTRIBUTES = &H3F2

Private Type OBJECT_ATTRIBUTES
Length As Long
RootDirectory As Long
ObjectName As Long
Attributes As Long
SecurityDeor As Long
SecurityQualityOfService As Long
End Type

Private Type ACL
AclRevision As Byte
Sbz1 As Byte
AclSize As Integer
AceCount As Integer
Sbz2 As Integer
End Type

Private Enum ACCESS_MODE
NOT_USED_ACCESS
GRANT_ACCESS
SET_ACCESS
DENY_ACCESS
REVOKE_ACCESS
SET_AUDIT_SUCCESS
SET_AUDIT_FAILURE
End Enum

Private Enum MULTIPLE_TRUSTEE_OPERATION
NO_MULTIPLE_TRUSTEE
TRUSTEE_IS_IMPERSONATE
End Enum

Private Enum TRUSTEE_FORM
TRUSTEE_IS_SID
TRUSTEE_IS_NAME
End Enum

Private Enum TRUSTEE_TYPE
TRUSTEE_IS_UNKNOWN
TRUSTEE_IS_USER
TRUSTEE_IS_GROUP
End Enum

Private Type TRUSTEE
pMultipleTrustee As Long
MultipleTrusteeOperation As MULTIPLE_TRUSTEE_OPERATION
TrusteeForm As TRUSTEE_FORM
TrusteeType As TRUSTEE_TYPE
ptstrName As String
End Type

Private Type EXPLICIT_ACCESS
grfAccessPermissions As Long
grfAccessMode As ACCESS_MODE
grfInheritance As Long
TRUSTEE As TRUSTEE
End Type

Private Type AceArray
List() As EXPLICIT_ACCESS
End Type

Private Enum SE_OBJECT_TYPE
SE_UNKNOWN_OBJECT_TYPE = 0
SE_FILE_OBJECT
SE_SERVICE
SE_PRINTER
SE_REGISTRY_KEY
SE_LMSHARE
SE_KERNEL_OBJECT
SE_WINDOW_OBJECT
SE_DS_OBJECT
SE_DS_OBJECT_ALL
SE_PROVIDER_DEFINED_OBJECT
SE_WMIGUID_OBJECT
End Enum

Private Declare Function SetSecurityInfo Lib "advapi32.dll" (ByVal Handle As Long, ByVal ObjectType As SE_OBJECT_TYPE, ByVal SecurityInfo As Long, ppsidOwner As Long, ppsidGroup As Long, ppDacl As Any, ppSacl As Any) As Long
Private Declare Function GetSecurityInfo Lib "advapi32.dll" (ByVal Handle As Long, ByVal ObjectType As SE_OBJECT_TYPE, ByVal SecurityInfo As Long, ppsidOwner As Long, ppsidGroup As Long, ppDacl As Any, ppSacl As Any, ppSecurityDeor As Long) As Long

Private Declare Function SetEntriesInAcl Lib "advapi32.dll" Alias "SetEntriesInAclA" (ByVal cCountOfExplicitEntries As Long, pListOfExplicitEntries As EXPLICIT_ACCESS, ByVal OldAcl As Long, NewAcl As Long) As Long
Private Declare Sub BuildExplicitAccessWithName Lib "advapi32.dll" Alias "BuildExplicitAccessWithNameA" (pExplicitAccess As EXPLICIT_ACCESS, ByVal pTrusteeName As String, ByVal AccessPermissions As Long, ByVal AccessMode As ACCESS_MODE, ByVal Inheritance As Long)

Private Declare Sub RtlInitUnicodeString Lib "NTDLL.DLL" (DestinationString As UNICODE_STRING, ByVal SourceString As Long)
Private Declare Function ZwOpenSection Lib "NTDLL.DLL" (SectionHandle As Long, ByVal DesiredAccess As Long, ObjectAttributes As Any) As Long
Private Declare Function LocalFree Lib "kernel32" (ByVal hMem As Any) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function MapViewOfFile Lib "kernel32" (ByVal hFileMappingObject As Long, ByVal dwDesiredAccess As Long, ByVal dwFileOffsetHigh As Long, ByVal dwFileOffsetLow As Long, ByVal dwNumberOfBytesToMap As Long) As Long
Private Declare Function UnmapViewOfFile Lib "kernel32" (lpBaseAddress As Any) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Private g_hNtDLL As Long
Private g_pMapPhysicalMemory As Long
Private g_hMPM As Long
Dim aByte(3) As Byte

'=========Checking OS staff=============
Private Type OSVERSIONINFO
dwOSVersionInfoSize As Long
dwMajorVersion As Long
dwMinorVersion As Long
dwBuildNumber As Long
dwPlatformId As Long
szCSDVersion As String * 128
End Type
Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" _
(LpVersionInformation As OSVERSIONINFO) As Long
Dim verinfo As OSVERSIONINFO

Private Sub SetPhyscialMemorySectionCanBeWrited(ByVal hSection As Long)
Dim pDacl As Long
Dim pNewDacl As Long
Dim pSD As Long
Dim dwRes As Long
Dim ea As EXPLICIT_ACCESS

GetSecurityInfo hSection, SE_KERNEL_OBJECT, _
DACL_SECURITY_INFORMATION, _
0, 0, pDacl, 0, pSD

ea.grfAccessPermissions = SECTION_MAP_WRITE
ea.grfAccessMode = GRANT_ACCESS
ea.grfInheritance = NO_INHERITANCE
ea.TRUSTEE.TrusteeForm = TRUSTEE_IS_NAME
ea.TRUSTEE.TrusteeType = TRUSTEE_IS_USER
ea.TRUSTEE.ptstrName = "CURRENT_USER" & vbNullChar

SetEntriesInAcl 1, ea, pDacl, pNewDacl

SetSecurityInfo hSection, SE_KERNEL_OBJECT, _
DACL_SECURITY_INFORMATION, _
0, 0, ByVal pNewDacl, 0

CleanUp:
LocalFree pSD
LocalFree pNewDacl
End Sub

Private Function OpenPhysicalMemory() As Long
Dim Status As Long
Dim PhysmemString As UNICODE_STRING
Dim Attributes As OBJECT_ATTRIBUTES

RtlInitUnicodeString PhysmemString, StrPtr("\Device\PhysicalMemory")
Attributes.Length = Len(Attributes)
Attributes.RootDirectory = 0
Attributes.ObjectName = VarPtr(PhysmemString)
Attributes.Attributes = 0
Attributes.SecurityDeor = 0
Attributes.SecurityQualityOfService = 0

Status = ZwOpenSection(g_hMPM, SECTION_MAP_READ Or SECTION_MAP_WRITE, Attributes)
If Status = STATUS_ACCESS_DENIED Then
Status = ZwOpenSection(g_hMPM, READ_CONTROL Or WRITE_DAC, Attributes)
SetPhyscialMemorySectionCanBeWrited g_hMPM
CloseHandle g_hMPM
Status = ZwOpenSection(g_hMPM, SECTION_MAP_READ Or SECTION_MAP_WRITE, Attributes)
End If

Dim lDirectoty As Long
verinfo.dwOSVersionInfoSize = Len(verinfo)
If (GetVersionEx(verinfo)) <> 0 Then
If verinfo.dwPlatformId = 2 Then
If verinfo.dwMajorVersion = 5 Then
Select Case verinfo.dwMinorVersion
Case 0
lDirectoty = &H30000
Case 1
lDirectoty = &H39000
End Select
End If
End If
End If

If Status = 0 Then
g_pMapPhysicalMemory = MapViewOfFile(g_hMPM, 4, 0, lDirectoty, &H1000)
If g_pMapPhysicalMemory <> 0 Then OpenPhysicalMemory = g_hMPM
End If

End Function

Private Function LinearToPhys(BaseAddress As Long, addr As Long) As Long
Dim VAddr As Long, PGDE As Long, PTE As Long, PAddr As Long
Dim lTemp As Long

VAddr = addr
CopyMemory aByte(0), VAddr, 4
lTemp = Fix(ByteArrToLong(aByte) / (2 ^ 22))

PGDE = BaseAddress + lTemp * 4
CopyMemory PGDE, ByVal PGDE, 4

If (PGDE And 1) <> 0 Then
lTemp = PGDE And &H80
If lTemp <> 0 Then
PAddr = (PGDE And &HFFC00000) + (VAddr And &H3FFFFF)
Else
PGDE = MapViewOfFile(g_hMPM, 4, 0, _
PGDE And &HFFFFF000, _
&H1000)
lTemp = (VAddr And &H3FF000) / (2 ^ 12)
PTE = PGDE + lTemp * 4
CopyMemory PTE, ByVal PTE, 4
If (PTE And 1) <> 0 Then
PAddr = (PTE And &HFFFFF000) + (VAddr And &HFFF)
UnmapViewOfFile PGDE
End If
End If
End If

LinearToPhys = PAddr

End Function

Private Function GetData(addr As Long) As Long
Dim phys As Long, tmp As Long, ret As Long

phys = LinearToPhys(g_pMapPhysicalMemory, addr)
tmp = MapViewOfFile(g_hMPM, 4, 0, _
phys And &HFFFFF000, &H1000)
If tmp <> 0 Then
ret = tmp + ((phys And &HFFF) / (2 ^ 2)) * 4
CopyMemory ret, ByVal ret, 4
UnmapViewOfFile tmp
GetData = ret
End If
End Function

Private Function SetData(ByVal addr As Long, ByVal data As Long) As Boolean
Dim phys As Long, tmp As Long, X As Long

phys = LinearToPhys(g_pMapPhysicalMemory, addr)
tmp = MapViewOfFile(g_hMPM, SECTION_MAP_WRITE, 0, _
phys And &HFFFFF000, &H1000)
If tmp <> 0 Then
X = tmp + ((phys And &HFFF) / (2 ^ 2)) * 4
CopyMemory ByVal X, data, 4

UnmapViewOfFile tmp
SetData = True
End If
End Function

Private Function ByteArrToLong(inByte() As Byte) As Double
Dim I As Integer
For I = 0 To 3
ByteArrToLong = ByteArrToLong + inByte(I) * (&H100 ^ I)
Next I

End Function

Public Sub 隐藏()
Dim thread As Long, process As Long, fw As Long, bw As Long
Dim strInfo As String

Dim lOffsetFlink As Long
Dim lOffsetBlink As Long
Dim lOffsetPID As Long
verinfo.dwOSVersionInfoSize = Len(verinfo)
If (GetVersionEx(verinfo)) <> 0 Then
If verinfo.dwPlatformId = 2 Then
If verinfo.dwMajorVersion = 5 Then
Select Case verinfo.dwMinorVersion
Case 0
lOffsetFlink = &HA0
lOffsetBlink = &HA4
lOffsetPID = &H9C
Case 1
lOffsetFlink = &H88
lOffsetBlink = &H8C
lOffsetPID = &H84
End Select
End If
End If
End If

If OpenPhysicalMemory <> 0 Then
thread = GetData(&HFFDFF124)
strInfo = "thread: &H" & Hex(thread) & vbCrLf

process = GetData(thread + &H44)
strInfo = strInfo & "process: &H" & Hex(process) & vbCrLf

fw = GetData(process + lOffsetFlink)
strInfo = strInfo & "fw: &H" & Hex(fw) & vbCrLf

bw = GetData(process + lOffsetBlink)
strInfo = strInfo & "bw: &H" & Hex(bw) & vbCrLf

SetData fw + 4, bw
SetData bw, fw
'MsgBox strInfo, , "pID=" & GetData(process + lOffsetPID)
CloseHandle g_hMPM
End If
End Sub 参考技术A 一、在XP系统或以上，VB无法做到隐藏进程，即使有的代码会实现，但也不稳定，时隐时现。
二、Msgbox具有独占运行性质，即窗体弹出Msgbox后，如果没有对Msgbox进行操作就不能对该窗口进行其他动作，与网页的那个alt对话框一样，所以没必要进行其他考虑。当然，如果还有其他窗口，则可以先把它们设visible=false，等对Msgbox进行操作后，再进行visible=True即可。