picturebox 边界计算
时间: 2024-11-13 18:14:24 浏览: 24
PictureBox 控件是 Windows Form 应用程序中常用的一个控件,它主要用于显示图片。边界计算通常是指获取 PictureBox 的可视区域的边缘坐标。在.NET Framework 中,你可以通过以下步骤来计算PictureBox的边界:
1. 获取PictureBox的Size属性,这将给出其总尺寸(宽度和高度)。
```csharp
Rectangle pictureBoxBounds = pictureBox1.Bounds;
int width = pictureBoxBounds.Width;
int height = pictureBoxBounds.Height;
```
2. 如果PictureBox有滚动条(ScrollBars),你需要减去滚动条占用的空间。可以使用`Scrollbars`属性来检查是否启用滚动,并调整`Width`和`Height`。
```csharp
if (pictureBox1.ScrollBars == ScrollBarStyle.Vertical)
{
height -= pictureBox1.VERTICAL_SCROLLBAR_SIZE;
}
if (pictureBox1.ScrollBars == ScrollBarStyle.Horizontal)
{
width -= pictureBox1.HORIZONTAL_SCROLLBAR_SIZE;
}
```
3. `pictureBox Bounds` 属性返回的是包括边框在内的全尺寸,如果只想得到实际显示内容的边界,需要从总尺寸中减去边框宽度,这通常可以通过`ClientRectangle`属性获得。
```csharp
width -= pictureBox1.BorderSize.Width;
height -= pictureBox1.BorderSize.Height;
Rectangle contentRectangle = new Rectangle(0, 0, width, height);
```
现在,`contentRectangle`就包含了PictureBox的实际显示内容的边界坐标。
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