Question

我已在OwnerDraw中创建了自定义ToolTip继承的Class控件，并且还添加了一些自定义属性。我的TextRenderer看起来像这样：

TextRenderer.DrawText(e.Graphics, e.ToolTipText, Me.Font, e.Bounds,
                      Me.ForeColor, Me.BackColor,
                      TextFormatFlags.HorizontalCenter Or TextFormatFlags.VerticalCenter)

我想让TextFormatFlags.HorizontalCenter和TextFormatFlags.VerticalCenter来自自定义属性，所以我这样做了：

Private _AlignVertical As TextFormatFlags
<Category("Custom Properties")> <DisplayName("Align Vertical")> <Description("ToolTip's text vertical align.")>
Public Property AlignVertical As TextFormatFlags
    Get
        Return _AlignVertical
    End Get
    Set(ByVal Value As TextFormatFlags)
        _AlignVertical = Value
    End Set
End Property
Private _AlignHorizontal As TextFormatFlags
<Category("Custom Properties")> <DisplayName("Align Horizontal")> <Description("ToolTip's text horizontal align.")>
Public Property AlignHorizontal As TextFormatFlags
    Get
        Return _AlignHorizontal
    End Get
    Set(ByVal Value As TextFormatFlags)
        _AlignHorizontal = Value
    End Set
End Property

然后我将TextRenderer更改为：

TextRenderer.DrawText(e.Graphics, e.ToolTipText, Me.Font, e.Bounds,
                      Me.ForeColor, Me.BackColor, 
                      Me.AlignHorizontal Or Me.AlignVertical)

我还将其添加到我的Public Sub New()：

中

Me.AlignHorizontal = TextFormatFlags.HorizontalCenter
Me.AlignVertical = TextFormatFlags.VerticalCenter

我的问题是，当我转到属性面板时，转到AlignHorizontal和AlignVertical我看到Left, Default, Top, HorizontalCenter和Left, Default, Top, VerticalCenter为值，而不是HorizontalCenter和{ {1}}正如我认为的那样。此外，在我的VerticalCenter s Form中，我收到错误，因为这些值看起来像这样：

Designer

任何一种指导都会非常感激!!!

Answer 1

根据我的知识，我使用下面这个简单的方法。如果有人有更好或更合适的东西......

首先，我将dob_list = raw_input("Enter date of birth. Format: YYYY M D: ").split(' ') program_data.date_of_birth_transformed = 'date(' + dob_list[0] + ', ' + dob_list[1] + ', ' + dob_list[2] + ')'属性替换为TextFormatFlags：

ContentAlignment

然后我在Private _TextAlign As ContentAlignment <Category("Custom Properties")> <DisplayName("Text Align")> <Description("The alignment of text in the ToolTip.")> Public Property TextAlign As ContentAlignment Get Return _TextAlign End Get Set(ByVal Value As ContentAlignment) _TextAlign = Value End Set End Property之前添加了IF声明，其中＆＃34;转换了＆＃34;从TextRenderer到TextFormatFlags的值：

ContentAlignment

Answer 2

对于来到这里并欣赏Simonetos的C＃开发人员来说，希腊语的答案与我一样，是标志分配的C＃翻译：

switch (TextAlign)
{
    case ContentAlignment.BottomCenter:
        return TextFormatFlags.Bottom | TextFormatFlags.HorizontalCenter;
    case ContentAlignment.BottomLeft:
        return TextFormatFlags.Bottom | TextFormatFlags.Left;
    case ContentAlignment.BottomRight:
        return TextFormatFlags.Bottom | TextFormatFlags.Right;
    case ContentAlignment.MiddleCenter:
        return TextFormatFlags.VerticalCenter | TextFormatFlags.HorizontalCenter;
    case ContentAlignment.MiddleLeft:
        return TextFormatFlags.VerticalCenter | TextFormatFlags.Left;
    case ContentAlignment.MiddleRight:
        return TextFormatFlags.VerticalCenter | TextFormatFlags.Right;
    case ContentAlignment.TopCenter:
        return TextFormatFlags.Top | TextFormatFlags.HorizontalCenter;
    case ContentAlignment.TopLeft:
        return TextFormatFlags.Top | TextFormatFlags.Left;
    case ContentAlignment.TopRight:
        return TextFormatFlags.Top | TextFormatFlags.Right;
    default:
        return TextFormatFlags.Default;
}

如何将TextFormatFlags用作继承控件的属性？

2 个答案: