Managed C++/CLI

public delegate bool LP_EnumWindowsProc(IntPtr hWnd, int lParam);
 
// this call fills list with all visible windows
EnumChildWindows(hWnd,  new LP_EnumWindowsProc(CollectVisibleWindows), 0);
 
private static bool CollectVisibleWindows(IntPtr hWnd, int lParam) {
	if(IsWindowVisible(hWnd)) list.Add(hWnd);
	return true;	// please continue enumeration !
}

delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);

[DllImport("user32", CharSet=CharSet::Ansi, SetLastError=true, ExactSpelling=true)]	static int EnumChildWindows(IntPtr hWndParent, EnumWindowsProc^ lpEnumFunc, IntPtr lParam){}

bool CALLBACK EnumWindowsCallback(IntPtr hWnd, IntPtr lParam){}

void UseIt() //errors
{
	EnumWindowsProc^ fp = gcnew EnumWindowsProc(EnumWindowsCallback);
	EnumChildWindows(Handle, fp, IntPtr::Zero);
}

// Delelgate
delegate bool EnumWindowProc(IntPtr hWnd, Int32 lParam);
 
// Global callback function
bool GlobalCallback(IntPtr hWnd, Int32 lParam)
{
	// ...
	
	return true;
}
 
DllImport("User32.DLL")]
public static extern void EnumWindows(EnumWindowProc callback, Int32 lParam);
 
// Your code ...
 
// Using global function syntax for creating delegate
EnumWindowProc^ ewp += gcnew EnumWindowProc(&GlobalCallback);
 
// ,,,
 
// Invoke Delegate
EnumWindows(ewp, 0);

mikobi wrote:

I need to realise a Form like I see codeproject forms.

mikobi wrote:

I try to use FLOWLAYOUTPANEL

sidkraft wrote:

Using Visual C++ 6.0

Native C++ (DLL)     Managed Assembly (DLL)
        \                  /
         \                /
       C++/CLI Assembly (DLL)

r.srinivas wrote:

non computer devices

philiptabraham wrote:

i also want to know why we cant create an object for an abstract class

Mark Salsbery
Microsoft MVP - Visual C++