Question

编辑：

我正在使用此自定义消息框，消息框可以接收自定义字体，我正在寻找能够使用大字体大小的方法，通过调整消息框窗口的大小来显示默认消息框窗口。

但是按照@ endofzero 说明我在调整窗口大小时发现问题是不足以解决自定义字体大小问题，如果我使用大字体字体那么字体将是显示'截断'，我的意思是裁剪，即使我使用高分辨率调整消息框窗口的大小，也没有办法，文本仍然排列在左上角，并显示为像一个小盒子一样裁剪。

所以我想我还需要调整包含消息框表单中的文本消息的控件，或者我完全想念的其他内容，但这可能会调整大小？怎么样？

（此自定义消息框由Hans Passant编写并由我修改：MessageBox with custom font?）

#Region " Centered MessageBox Class"

Imports System.Drawing
Imports System.Runtime.InteropServices
Imports System.Text
Imports System.Windows.Forms

Class CenteredMessageBox : Implements IDisposable

    Private mTries As Integer = 0
    Private mOwner As Form
    Private mFont As Font

    ' P/Invoke declarations
    Private Const WM_SETFONT As Integer = &H30
    Private Const WM_GETFONT As Integer = &H31

    Private Delegate Function EnumThreadWndProc(hWnd As IntPtr, lp As IntPtr) As Boolean

    <DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
    Private Shared Function EnumThreadWindows(tid As Integer, callback As EnumThreadWndProc, lp As IntPtr) As Boolean
    End Function

    <DllImport("kernel32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
    Private Shared Function GetCurrentThreadId() As Integer
    End Function

    <DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
    Private Shared Function GetClassName(hWnd As IntPtr, buffer As StringBuilder, buflen As Integer) As Integer
    End Function

    <DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
    Private Shared Function GetDlgItem(hWnd As IntPtr, item As Integer) As IntPtr
    End Function

    <DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
    Private Shared Function SendMessage(hWnd As IntPtr, msg As Integer, wp As IntPtr, lp As IntPtr) As IntPtr
    End Function

    <DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
    Shared Function GetWindowRect(hWnd As IntPtr, ByRef rc As RECT) As Boolean
    End Function

    <DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
    Shared Function MoveWindow(hWnd As IntPtr, x As Integer, y As Integer, w As Integer, h As Integer, repaint As Boolean) As Boolean
    End Function

    Structure RECT
        Public Left As Integer
        Public Top As Integer
        Public Right As Integer
        Public Bottom As Integer
    End Structure

    Public Sub New(owner As Form, Optional Custom_Font As Font = Nothing)
        mOwner = owner
        mFont = Custom_Font
        owner.BeginInvoke(New MethodInvoker(AddressOf findDialog))
    End Sub

    Private Sub findDialog()

        ' Enumerate windows to find the message box
        If mTries < 0 Then
            Return
        End If

        Dim callback As New EnumThreadWndProc(AddressOf checkWindow)

        If EnumThreadWindows(GetCurrentThreadId(), callback, IntPtr.Zero) Then
            If System.Threading.Interlocked.Increment(mTries) < 10 Then
                mOwner.BeginInvoke(New MethodInvoker(AddressOf findDialog))
            End If
        End If

    End Sub

    Private Function checkWindow(hWnd As IntPtr, lp As IntPtr) As Boolean

        ' Checks if <hWnd> is a dialog
        Dim sb As New StringBuilder(260)
        GetClassName(hWnd, sb, sb.Capacity)
        If sb.ToString() <> "#32770" Then Return True

        ' Got it, get the STATIC control that displays the text
        Dim hText As IntPtr = GetDlgItem(hWnd, &HFFFF)

        Dim frmRect As New Rectangle(mOwner.Location, mOwner.Size)
        Dim dlgRect As RECT
        GetWindowRect(hWnd, dlgRect)
        MoveWindow(hWnd, frmRect.Left + (frmRect.Width - dlgRect.Right + dlgRect.Left) \ 2, frmRect.Top + (frmRect.Height - dlgRect.Bottom + dlgRect.Top) \ 2, dlgRect.Right - dlgRect.Left, dlgRect.Bottom - dlgRect.Top, True)
        If hText <> IntPtr.Zero Then

            If mFont Is Nothing Then
                ' Get the current font
                mFont = Font.FromHfont(SendMessage(hText, WM_GETFONT, IntPtr.Zero, IntPtr.Zero))
            End If

            SendMessage(hText, WM_SETFONT, mFont.ToHfont(), New IntPtr(1))

        End If

        ' Done
        Return False

    End Function

    Public Sub Dispose() Implements IDisposable.Dispose
        mTries = -1
        mOwner = Nothing
        If mFont IsNot Nothing Then mFont.Dispose()
    End Sub

End Class

#End Region

用法示例：

 Using New CenteredMessageBox(Me, New Font(New FontFamily("Lucida Console"), Font.SizeInPoints, FontStyle.Bold))
     MessageBox.Show("Test Text", "Test Title", MessageBoxButtons.OK, MessageBoxIcon.Information)
 End Using

Answer 1

您需要添加以下内容之一：

 Friend Declare Function SetWindowPos Lib "user32" (ByVal hwnd As IntPtr, ByVal hWndInsertAfter As IntPtr, ByVal x As Integer, ByVal y As Integer, ByVal cx As Integer, ByVal cy As Integer, ByVal wFlags As UInt32) As Boolean

并在您的checkwindow代码中，在发送消息代码之后，就像这样

 SetWindowPos(hText, 0, 70, 30, 170, 30, 0)

调整MessageBox窗口的大小，显示自定义字体大小？

1 个答案: