英文:
C# - Mouse Down event for form is not working
问题
我正在尝试制作可拖动的窗体，但当我尝试检测鼠标按下和抬起事件时，却没有触发事件。其他功能似乎是有效的，但这两个事件没有触发。
英文:
I'm trying to make draggable window form, but when I tried to detect mouse down and up event to form, but event does not fire.
Other things seems working but those 2 events are not.
public form()
{
InitializeComponent();
this.BackColor = Color.Fuchsia;
this.TransparencyKey = this.BackColor;
Debug.Write("initialized");
}
private void form_MouseDown(object sender, MouseEventArgs e)
{
Debug.Write("dragging..");
}
private void form_MouseUp(object sender, MouseEventArgs e)
{
Debug.Write("drag done");
}
答案1
得分: 0
最好将一个 `panel` 添加到您的表单，并将 `Dock` 设置为 `top` 以覆盖标题栏区域。然后使用这个示例代码
private bool isDragging = false;
private Point lastLocation;
private void panel_MouseDown(object sender, MouseEventArgs e)
{
isDragging = true;
lastLocation = e.Location;
}
private void panel_MouseMove(object sender, MouseEventArgs e)
{
if (isDragging)
{
this.Location = new Point(
(this.Location.X - lastLocation.X) + e.X,
(this.Location.Y - lastLocation.Y) + e.Y);
this.Update();
}
}
private void panel_MouseUp(object sender, MouseEventArgs e)
{
isDragging = false;
}
不要忘记在表单构造函数中添加处理程序
panel.MouseDown += panel_MouseDown;
panel.MouseMove += panel_MouseMove;
panel.MouseUp += panel_MouseUp;
英文:
it is better to add a panel to your form and set Dock to top in order to cover the title bar area. then use this sample code
private bool isDragging = false;
private Point lastLocation;
private void panel_MouseDown(object sender, MouseEventArgs e)
{
isDragging = true;
lastLocation = e.Location;
}
private void panel_MouseMove(object sender, MouseEventArgs e)
{
if (isDragging)
{
this.Location = new Point(
(this.Location.X - lastLocation.X) + e.X,
(this.Location.Y - lastLocation.Y) + e.Y);
this.Update();
}
}
private void panel_MouseUp(object sender, MouseEventArgs e)
{
isDragging = false;
}
don't forget to add handlers in the form constructor
panel.MouseDown += panel_MouseDown;
panel.MouseMove += panel_MouseMove;
panel.MouseUp += panel_MouseUp;
答案2
得分: 0
在你的窗体构造函数中，注册那些用于监听鼠标按下事件的方法，就像这样。
public form() {
InitializeComponent();
this.BackColor = Color.Fuchsia;
this.TransparencyKey = this.BackColor;
Debug.Write("initialized");
//注册用于监听事件的方法
this.MouseDown += form_MouseDown;
this.MouseUp += form_MouseUp;
}
private void form_MouseDown(object sender,
MouseEventArgs e) {
Debug.Write("拖拽中..");
}
private void form_MouseUp(object sender,
MouseEventArgs e) {
Debug.Write("拖拽完成");
}
英文:
In your constructor for form, register those methods your using to listen for the mouse down events like this.
public form() {
InitializeComponent();
this.BackColor = Color.Fuchsia;
this.TransparencyKey = this.BackColor;
Debug.Write("initialized");
//register the methods to listen for the events
this.MouseDown += form_MouseDown;
this.MouseUp += form_MouseUp;
}
private void form_MouseDown(object sender,
MouseEventArgs e) {
Debug.Write("dragging..");
}
private void form_MouseUp(object sender,
MouseEventArgs e) {
Debug.Write("drag done");
}
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