WPF 非规则窗体 如何拉伸 改变大小呢 ? 不知道失哪个方法或者是哪个属性

Question

现在可以移动窗体了..但改变大小怎么弄 ?

Answer 1

我一般这么做：

<Canvas>
    <Border x:Name="Content" Canvas.Left="500" Canvas.Top="500" Width="500" Height="500" MinWidth="100" MinHeight="100" CornerRadius="2" Background="#FF3A3A3A">
        <Border.Effect>
            <DropShadowEffect ShadowDepth="0" BlurRadius="10"/>
        </Border.Effect>
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="8" />
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="8" />
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="8" />
                <RowDefinition Height="Auto" />
                <RowDefinition Height="*" />
                <RowDefinition Height="8" />
            </Grid.RowDefinitions>
            <Thumb Opacity="0" Grid.Row="0" Grid.Column="0" Cursor="SizeNWSE" Tag="TL" DragDelta="Thumb_DragDelta"/>
            <Thumb Opacity="0" Grid.Row="0" Grid.Column="2" Cursor="SizeNESW" Tag="TR" DragDelta="Thumb_DragDelta"/>
            <Thumb Opacity="0" Grid.Row="3" Grid.Column="0" Cursor="SizeNESW" Tag="BL" DragDelta="Thumb_DragDelta"/>
            <Thumb Opacity="0" Grid.Row="3" Grid.Column="2" Cursor="SizeNWSE" Tag="BR" DragDelta="Thumb_DragDelta"/>
            <Thumb Opacity="0" Grid.Row="0" Grid.Column="1" Cursor="SizeNS" Tag="T" DragDelta="Thumb_DragDelta"/>
            <Thumb Opacity="0" Grid.Row="3" Grid.Column="1" Cursor="SizeNS" Tag="B" DragDelta="Thumb_DragDelta"/>
            <Thumb Opacity="0" Grid.Row="1" Grid.Column="0" Grid.RowSpan="2" Cursor="SizeWE" Tag="L" DragDelta="Thumb_DragDelta"/>
            <Thumb Opacity="0" Grid.Row="1" Grid.Column="2" Grid.RowSpan="2" Cursor="SizeWE" Tag="R" DragDelta="Thumb_DragDelta"/>
            <Thumb Opacity="0" Grid.Row="1" Grid.Column="1" Cursor="SizeAll" Tag="M" DragDelta="Thumb_DragDelta"/>
        </Grid>
    </Border>
</Canvas>

private void Thumb_DragDelta(object sender, DragDeltaEventArgs e)
{
    var str = (string)((Thumb)sender).Tag;

    if (str.Contains("T"))
    {
        Content.Height = Math.Min(Math.Max(Content.MinHeight, Content.ActualHeight - e.VerticalChange), Content.MaxHeight);
        Canvas.SetTop(Content, Canvas.GetTop(Content) - Content.Height + Content.ActualHeight);
    }
    if (str.Contains("L"))
    {
        Content.Width = Math.Min(Math.Max(Content.MinWidth, Content.ActualWidth - e.HorizontalChange), Content.MaxWidth);
        Canvas.SetLeft(Content, Canvas.GetLeft(Content) - Content.Width + Content.ActualWidth);
    }
    if (str.Contains("B"))
    {
        Content.Height = Math.Min(Math.Max(Content.MinHeight, Content.ActualHeight + e.VerticalChange), Content.MaxHeight);
    }
    if (str.Contains("R"))
    {
        Content.Width = Math.Min(Math.Max(Content.MinWidth, Content.ActualWidth + e.HorizontalChange), Content.MaxWidth);
    }
    if (str.Contains("M"))
    {
        Canvas.SetTop(Content, Canvas.GetTop(Content) + e.VerticalChange);
        Canvas.SetLeft(Content, Canvas.GetLeft(Content) + e.HorizontalChange);
    }

    e.Handled = true;
}

Window : WindowStyle="None" Background="Transparent" AllowsTransparency="True"

Best regards,

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Sheldon _Xiao[MSFT]
MSDN Community Support | Feedback to us
Microsoft
Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 2

楼上做复杂了，应该使用 Windows® API Code Pack 功能。

我的例子： https://skydrive.live.com/embed?cid=51B2FDD068799D15&resid=51B2FDD068799D15%21589&authkey=ADePkVfy0NiOCuI

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Bob Bao [MSFT]
MSDN Community Support | Feedback to us

Answer 3

有个小问题 向上resize的时候窗口下边缘浮动，是我本地的问题 还是其他的

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Sheldon _Xiao[MSFT]
MSDN Community Support | Feedback to us
Microsoft
Please remember to mark the replies as answers if they help and unmark them if they provide no help.