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[DllImport("User32.dll", EntryPoint = "SendMessage")]
private static extern int SendMessage(int hWnd, int Msg, int wParam, ref COPYDATASTRUCT lParam);
[DllImport("User32.dll", EntryPoint = "FindWindow")]
private static extern int FindWindow(string lpClassName, string lpWindowName);
private void SendMsg(string msg)
{
int WINDOW_HANDLER = FindWindow(null, @"From1");
if (WINDOW_HANDLER == 0)
{
MessageBox.Show("没有找到From1!");
}
else
{
.....
}
}
IntPtr iHandle;
foreach (Form form in this.MdiParent.MdiChildren) {
if (form.Text.Equals("frm_B") == true) {
iHandle = form.Handle;
}
}
frm_A af = new frm_A(this);
af.MdiParent = this;
af.Show();
frm_B bf = new frm_B(this);
bf.MdiParent = this;
bf.Show();