我在一个表单中有 5 个面板,在两个不同的面板中有两个按钮,现在的要求是将按钮从一个面板移动到另一个面板。
请给我一个代码。
为了演示,在一个表单上放置两个面板,在其中一个面板中放置一个按钮:
public Form1() {
InitializeComponent();
panel1.AllowDrop = true;
panel2.AllowDrop = true;
panel1.DragEnter += panel_DragEnter;
panel2.DragEnter += panel_DragEnter;
panel1.DragDrop += panel_DragDrop;
panel2.DragDrop += panel_DragDrop;
button1.MouseDown += button1_MouseDown;
}
void button1_MouseDown(object sender, MouseEventArgs e) {
button1.DoDragDrop(button1, DragDropEffects.Move);
}
void panel_DragEnter(object sender, DragEventArgs e) {
e.Effect = DragDropEffects.Move;
}
void panel_DragDrop(object sender, DragEventArgs e) {
((Button)e.Data.GetData(typeof(Button))).Parent = (Panel)sender;
}
此方法也适用于组框,但必须手动添加 MouseEnter、MouseLeave 和 MouseUp 事件:
public frmMain ( ) {
InitializeComponent ( );
pbxMoveIt.BringToFront ( );
gbx1.AllowDrop = true;
gbx2.AllowDrop = true;
lblStatus.Text = "GUI Status: Started";
gbx1.MouseEnter += gbx_MouseEnter;
gbx1.MouseLeave += gbx_MouseLeave;
gbx1.MouseUp += gbx_MouseUp;
gbx2.MouseEnter += gbx_MouseEnter;
gbx2.MouseLeave += gbx_MouseLeave;
gbx2.MouseUp += gbx_MouseUp;
}
private void gbx_MouseEnter ( object sender, EventArgs e ) {
// useful code
// ...
}
private void gbx_MouseLeave ( object sender, EventArgs e ) {
// useful code
// ...
}
private void gbx_MouseUp ( object sender, EventArgs e ) {
// useful code
// ...
}