我有一个没有任何边框的窗体。 所以我添加了一个图片框,我希望在单击该图片框时移动整个表单。
public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HT_CAPTION = 0x2;
[DllImportAttribute("user32.dll")]
public static extern int SendMessage(IntPtr hWnd,
int Msg, int wParam, int lParam);
[DllImportAttribute("user32.dll")]
public static extern bool ReleaseCapture();
private void header_image_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
ReleaseCapture();
SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
}
}
这是我正在使用atm的代码。但我的问题是,如果我非常快地移动光标,它就不会粘在图片框上。
我试图找到一个解决方案但没有出现。 我使用了来自这两个链接的一些信息:
有什么想法吗?
编辑: 这是我的表格的整个代码
public Form1()
{
InitializeComponent();
}
public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HT_CAPTION = 0x2;
[DllImportAttribute("user32.dll")]
public static extern int SendMessage(IntPtr hWnd,
int Msg, int wParam, int lParam);
[DllImportAttribute("user32.dll")]
public static extern bool ReleaseCapture();
private void header_image_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
ReleaseCapture();
SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
}
}
答案 0 :(得分:0)
参考此代码:
private bool draging = false;
private Point pointClicked;
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
if (draging)
{
Point pointMoveTo;
pointMoveTo = this.PointToScreen(new Point(e.X, e.Y));
pointMoveTo.Offset(-pointClicked.X, -pointClicked.Y);
this.Location = pointMoveTo;
}
}
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
draging = true;
pointClicked = new Point(e.X, e.Y);
}
else
{
draging = false;
}
}
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
draging = false;
}
答案 1 :(得分:0)
使用MouseMove()
事件代替MouseDown()
:
private void header_image_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
ReleaseCapture();
SendMessage(this.Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
}
}