How to Activate A Control Added to Desktop

[gnrgattadi]

I have Created A ListBox Control Whose Handle is Desktop.



My code for ListBox:

#using

using namespace System;

using namespace System::ComponentModel;

using namespace System::Collections;

using namespace System::Windows::Forms;

using namespace System:ata;

using namespace System:rawing;

using namespace System::Runtime::InteropServices;

using namespace System::Security::Permissions;





namespace DeskTopTest

{

///

/// Summary for MyListBox

///

// Requires unmanaged code

[assembly: SecurityPermissionAttribute (SecurityAction::RequestMinimum, UnmanagedCode=true)];

// Requires ability to create any window type

[assembly:UIPermissionAttribute(SecurityAction::Req uestMinimum, Window=UIPermissionWindow::AllWindows)];

public ref class MyListBox : public ListBox

{

public:

MyListBox(void)

{


}

protected: virtual property System::Windows::Forms::CreateParams^ CreateParams

{


virtual System::Windows::Forms::CreateParams^ get() override

{

const int WS_EX_TOOLWINDOW = 0x00000080;

const int WS_EX_NOACTIVATE = 0x08000000;

const int WS_EX_TOPMOST = 0x00000008;

try

{

System::Windows::Forms::CreateParams ^p =ListBox::CreateParams;

p->ExStyle |= (WS_EX_NOACTIVATE | WS_EX_TOOLWINDOW | WS_EX_TOPMOST);

p->Parent = IntPtr::Zero;

return p;

}

catch (Exception^ e)

{

return nullptr;

}




}

}

public:[DllImport("user32.dll")] static int SetParent( IntPtr hWndChild, IntPtr hWndNewParent);

[DllImport("user32.dll")] static int ShowWindow( IntPtr hWnd, int nCmdShow);

[DllImport("user32.dll")] static IntPtr GetDesktopWindow(void);



public: void ShowFloating()

{


if (this->Handle == IntPtr::Zero)

{

ListBox::CreateControl();

}

//IntPtr s=GetDesktopWindow();

int x=SetParent(ListBox::Handle, IntPtr::Zero);

x=ShowWindow(ListBox::Handle,1);


}

protected:

virtual void WndProc(Message% m)override

{

ListBox::WndProc(m);

}


};

}





but when i Added this listbox to my form like:



MyListBox ^lst=gcnew MyListBox();

lst->Location=System:rawing::Point(264, 166);

lst->Name = L"comboBox1";

lst->TabIndex = 1;

lst->Visible=false;

lst->Size = System:rawing::Size(171, 200);

for (UInt16 i=1;i<100;i++)

{

lst->Items->Add("Item"+i.ToString());

}

lst->ShowFloating();



and calling the function ShowFloating();

It is working fine.

But I cant unable to focus On my Listbox & cant able to use my mouse events.



I want to focus on listbox.



Plz Suggest me .........



Thanks in advance


Nagaraju

[kenobewan]

Here is an article that may help:
Injecting Dynamic JavaScript to Focus ASP.NET Controls