c++ - 在 VBA 中使用 CreateDialog 尝试创建无模式对话框

Question

我想在 VBA 7.0 中创建一个无模式弹出对话框。 到目前为止，最有希望的路线似乎是CreateDialog .

首先我尝试了 CreateDialogW 并收到 Entry point not found for CreateDialogW in DLL。
打开DLL后，我验证了这个函数没有列出。上面链接的 MSDN 引用将 User32 显示为此函数的 DLL，并列出了函数名称 CreateDialogW 和 CreateDialogA(分别为 Unicode/ansi)，但它们未在此 DLL 中列出我的电脑(Win 7 专业版，64 位)。

所以，查看 DLL 中 的函数列表，我看到了 CreateDialogParam and CreateDialogIndirectParam functions (Ansi 和 Unicode 版本)。

我一直在尝试遵循 MSDN 并将 C 示例转换为 VB，但我在某处遗漏了一些东西，我有点卡住了，因为我不知道自己做错了什么。代码编译并运行没有错误，但 API 调用没有任何反应 - 它执行但没有任何反应。

如果有人能给我一些正确方向的指示，我将不胜感激。 我目前的解决方法很糟糕，我真的很想关闭这个项目。

Option Explicit

'Reference conversion of C to VB type declarations here
'http://msdn.microsoft.com/en-us/library/aa261773(v=vs.60).aspx

'Declare function to Win API CreateDialog function
'http://msdn.microsoft.com/en-us/library/ms645434(v=vs.85).aspx
Private Declare PtrSafe Function CreateDialog Lib "User32.dll" Alias "CreateDialogParamW" _
                                (ByVal lpTemplateName As LongPtr, _
                                 ByRef lpDialogFunc As DIALOGPROC, _
                                 ByVal dwInitParam As Long, _
                                 Optional ByVal hInstance As Long, _
                                 Optional ByVal hWndParent As Long) _
                                As Long

'Windows Style Constants
'http://msdn.microsoft.com/en-us/library/windows/desktop/ms632600(v=vs.85).aspx
Public Const WS_BORDER As Long = &H800000
Public Const WS_CAPTION As Long = &HC00000
Public Const WS_CHILD As Long = &H40000000
Public Const WS_CHILDWINDOW As Long = &H40000000
Public Const WS_CLIPCHILDREN As Long = &H2000000
Public Const WS_CLIPSIBLINGS As Long = &H4000000
Public Const WS_DISABLED As Long = &H8000000
Public Const WS_DLGFRAME As Long = &H400000
Public Const WS_GROUP As Long = &H20000
Public Const WS_HSCROLL As Long = &H100000
Public Const WS_ICONIC As Long = &H20000000
Public Const WS_MAXIMIZE As Long = &H1000000
Public Const WS_MAXIMIZEBOX As Long = &H10000
Public Const WS_MINIMIZE As Long = &H20000000
Public Const WS_MINIMIZEBOX As Long = &H20000
Public Const WS_OVERLAPPED As Long = &H0
Public Const WS_POPUP As Long = &H80000000
Public Const WS_SIZEBOX As Long = &H40000
Public Const WS_SYSMENU As Long = &H80000
Public Const WS_TABSTOP As Long = &H10000
Public Const WS_THICKFRAME As Long = &H40000
Public Const WS_TILED As Long = &H0
Public Const WS_VISIBLE As Long = &H10000000
Public Const WS_VSCROLL As Long = &H200000
Public Const WS_OVERLAPPEDWINDOW As Long = (WS_OVERLAPPED + WS_CAPTION + WS_SYSMENU + WS_THICKFRAME + WS_MINIMIZEBOX + WS_MAXIMIZEBOX)
Public Const WS_TILEDWINDOW As Long = (WS_OVERLAPPED + WS_CAPTION + WS_SYSMENU + WS_THICKFRAME + WS_MINIMIZEBOX + WS_MAXIMIZEBOX)
Public Const WS_POPUPWINDOW As Long = (WS_POPUP + WS_BORDER + WS_SYSMENU)

'Declare custom type for lpDialogFunc argument
'http://msdn.microsoft.com/en-us/library/windows/desktop/ms645469(v=vs.85).aspx
Public Type DIALOGPROC
    hwndDlg As Long
    uMsg As LongPtr
    wparam As Long
    lparam As Long
End Type


'MAKEINTRESOURCE Macro emulation
'http://msdn.microsoft.com/en-us/library/windows/desktop/ms648029(v=vs.85).aspx
'Bitwise function example found here: http://support.microsoft.com/kb/112651
'VB conversion found here: https://groups.google.com/forum/#!topic/microsoft.public.vb.winapi/UaK3S-bJaiQ _
 modified with strong typing and to use string pointers for VB7
Private Function MAKEINTRESOURCE(ByVal lID As Long) As LongPtr
     MAKEINTRESOURCE = StrPtr("#" & CStr(MAKELONG(lID, 0)))
End Function

Private Function MAKELONG(ByRef wLow As Long, ByRef wHi As Long)
    'Declare variables
        Dim LoLO            As Long
        Dim HiLO            As Long
        Dim LoHI            As Long
        Dim HiHI            As Long

    'Get the HIGH and LOW order words from the long integer value
        GetHiLoWord wLow, LoLO, HiLO
        GetHiLoWord wHi, LoHI, HiHI

            If (wHi And &H8000&) Then
                MAKELONG = (((wHi And &H7FFF&) * 65536) Or (wLow And &HFFFF&)) Or &H80000000
            Else
                MAKELONG = LoLO Or (&H10000 * LoHI)
                'MAKELONG = ((wHi * 65535) + wLow)
            End If
End Function

Private Function GetHiLoWord(lparam As Long, LOWORD As Long, HIWORD As Long)
    'This is the LOWORD of the lParam:
        LOWORD = lparam And &HFFFF&
    'LOWORD now equals 65,535 or &HFFFF
    'This is the HIWORD of the lParam:
        HIWORD = lparam \ &H10000 And &HFFFF&
    'HIWORD now equals 30,583 or &H7777
        GetHiLoWord = 1
End Function

Public Function TstDialog()
    Dim dpDialog                As DIALOGPROC

    dpDialog.hwndDlg = 0
    dpDialog.uMsg = StrPtr("TEST")
    dpDialog.lparam = 0
    dpDialog.wparam = 0

    CreateDialog hInstance:=0, lpTemplateName:=MAKEINTRESOURCE(WS_POPUPWINDOW + WS_VISIBLE), lpDialogFunc:=dpDialog, dwInitParam:=&H110
End Function

Answer 1

这可以工作，尽管你是否应该尝试使其工作是另一个问题。我有一个显示空对话框的工作版本。今晚我没有更多时间来完成对话框上的实际控制，但我发帖希望它能让你开始。

首先，您需要忘记 CreateDialog，因为它们要求对话框模板位于资源部分。您可以使用 CreateDialogIndirectParam 从内存中的对话框模板创建对话框。你需要这个:

Private Type DLGTEMPLATE
    style As Long
    dwExtendedStyle As Long
    cdit As Integer
    x As Integer
    y As Integer
    cx As Integer
    cy As Integer
End Type

Private Type DLGITEMTEMPLATE
    style As Long
    dwExtendedStyle As Long
    x As Integer
    y As Integer
    cx As Integer
    cy As Integer
    id As Integer
End Type

Private Type DLG
    dlgtemp As dlgtemplate
    menu As Long
    classname As String
    title As String
End Type

Private Declare PtrSafe Function CreateDialogIndirectParam Lib "User32.dll" Alias "CreateDialogIndirectParamW" _
  (ByVal hInstance As Long, _
  ByRef lpTemplate As DLGTEMPLATE, _
  ByVal hWndParent As Long, _
  ByVal lpDialogFunc As LongPtr, _
  ByVal lParamInit As Long) _
  As LongPtr

Const WM_INITDIALOG As Long = &H110
Const DS_CENTER As Long = &H800&
Const DS_SETFONT As Long = &H40
Const DS_MODALFRAME As Long = &H80
Const WS_EX_APPWINDOW As Long = &H40000

然后这样调用它:

Dim d As DLG
d.dlgtemp.style = DS_MODALFRAME + WS_POPUP + WS_VISIBLE + WS_CAPTION + WS_SYSMENU
d.dlgtemp.dwExtendedStyle = WS_EX_APPWINDOW
d.dlgtemp.cdit = 0
d.dlgtemp.x = 100
d.dlgtemp.y = 100
d.dlgtemp.cx = 200
d.dlgtemp.cy = 200
d.menu = 0
d.title = "Test"
d.classname = "Test"

CreateDialogIndirectParam 0, d.dlgtemp, 0, AddressOf DlgFunc, 0

DlgFunc 看起来像这样:

Public Function DlgFunc(ByVal hwndDlg As LongPtr, ByVal uMsg As LongPtr, ByVal wParam As LongPtr, ByVal lParam As LongPtr) As LongPtr
    If uMsg = h110 Then  ' = WM_INITDIALOG - you should make a const for the various window messages you'll need...
        DlgFunc = True
    Else
        DlgFunc = False
    End If
End Function

距离我上一次做这些事情已经十多年了。但是如果你决心走这条路，我认为这种方法是最有前途的——下一步是调整 DLG 结构以添加一些 DLGITEMTEMPLATE 成员，将 d.dlgtemp.cdit 设置为对话框上的控件数量，并开始处理 DlgFunc 中的控制消息。