From the attached code.With AllowDrop = True I get a .NET error as follows:
System.InvalidOperationException: DragDrop registration failed. --->
System.Threading.ThreadStateException: The current thread must set to Single
Thread Apartment (STA) mode before OLE calls can be made. Ensure that your Main
function has STAThreadAttribute marked on it.
From googling I need to set ApartmentState.STA. But this is readonly. How do I
set STA correctly in Python for .NET?
Any thoughts appeciated.
Guy
from CLR import System
import CLR.System.Windows.Forms as WinForms
from CLR.System.Drawing import Color, Size, Point
from CLR.System import ComponentModel,Data, Collections, Threading
from CLR.System.Runtime import InteropServices
class dataNode(WinForms.TreeNode):
def __init__(self,name,total,skill):
self.Text = name
self.Total = total
self.Skill = skill
class DnDTree(WinForms.Form):
"""A WinForms example.
"""
def __init__(self):
self.components = System.ComponentModel.Container()
self.treeView1 = WinForms.TreeView()
self.listBox1 = WinForms.ListBox()
self.SuspendLayout()
# Set properties of TreeView 1.
self.treeView1.AllowDrop = True
self.treeView1.ImageIndex = -1
self.treeView1.Location = System.Drawing.Point(24, 32)
self.treeView1.CheckBoxes = True
self.treeView1.Name = "treeView1"
self.treeView1.Nodes.Clear()
self.treeView1.BeginUpdate()
for pnode in range(50):
self.treeView1.Nodes.Add(dataNode("node%d"%pnode,3,"high"))
for cnode in range(15):
self.treeView1.Nodes[pnode].Nodes.Add("childnode%d"%cnode)
self.treeView1.EndUpdate()
#for node in self.treeView1.Nodes:
#print node.Total
self.treeView1.SelectedImageIndex = -1
self.treeView1.Size = System.Drawing.Size(300, 600)
self.treeView1.TabIndex = 0
#self.treeView1.MouseDown +=
System.Windows.Forms.MouseEventHandler(self.treeView1_MouseDown)
#self.treeView1.AfterSelect +=
System.Windows.Forms.TreeViewEventHandler(self.treeView1_AfterSelect)
#self.treeView1.QueryContinueDrag +=
System.Windows.Forms.QueryContinueDragEventHandler(self.treeView1_QueryContinueDrag)
#self.treeView1.DragEnter +=
System.Windows.Forms.DragEventHandler(self.treeView1_DragEnter)
#self.treeView1.ItemDrag +=
System.Windows.Forms.ItemDragEventHandler(self.treeView1_ItemDrag)
# Set properties of ListBox 1.
self.listBox1.AllowDrop = True
self.listBox1.Location = System.Drawing.Point(24, 650)
self.listBox1.Name = "listBox1"
self.listBox1.Size = System.Drawing.Size(300, 300)
self.listBox1.TabIndex = 1
#self.listBox1.DragDrop +=
System.Windows.Forms.DragEventHandler(self.listBox1_DragDrop)
#self.listBox1.DragEnter +=
System.Windows.Forms.DragEventHandler(self.listBox1_DragEnter)
#Now do Form
self.AutoScaleBaseSize = System.Drawing.Size(5,13)
self.ClientSize = System.Drawing.Size(400,1024)
self.Controls.Add(self.listBox1)
self.Controls.Add(self.treeView1)
self.ShowInTaskbar = False
self.StartPosition = WinForms.FormStartPosition.CenterScreen
self.Name = "Form1"
self.Text = "Form1"
self.ResumeLayout(False)
def Dispose(self):
self.components.Dispose()
WinForms.Form.Dispose(self)
def main():
app = DnDTree()
WinForms.Application.Run(app)
app.Dispose()
if __name__ == '__main__':
main()_________________________________________________
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