protected override void WndProc(ref Message m)
{
//the link uses WM_LBUTTONDOWN but I found that it doesn't work
if (m.Msg == WM_LBUTTONUP || m.Msg == WM_LBUTTONDOWN)
{
LVHITTESTINFO info = new LVHITTESTINFO();
//The LParamToPOINT function I adapted to not bother with
// converting to System.Drawing.Point, rather I just made
// its return type the POINT struct
Point hitPoint = LParamToPoint(m.LParam);
info.pt.x = hitPoint.X;
info.pt.y = hitPoint.Y;
//if the click is on the group header, exit, otherwise send message
if (NativeMethods.SendMessage(this.Handle, LVM_SUBITEMHITTEST, -1, ref info) != -1)
if ((info.flags & LVHITTESTFLAGS.LVHT_EX_GROUP_HEADER) != 0)
return; //*
if (m.Msg >= 0x201 && m.Msg <= 0x209)
{
Point pos = new Point(m.LParam.ToInt32() & 0xffff, m.LParam.ToInt32() >> 16);
var hit = this.HitTest(pos);
switch (hit.Location)
{
case ListViewHitTestLocations.AboveClientArea:
case ListViewHitTestLocations.BelowClientArea:
case ListViewHitTestLocations.LeftOfClientArea:
case ListViewHitTestLocations.RightOfClientArea:
case ListViewHitTestLocations.None:
return;
}
}
}
else if (m.Msg == WM_LBUTTONDBLCLK || m.Msg == WM_RBUTTONDBLCLK || m.Msg == WM_RBUTTONUP || m.Msg == WM_RBUTTONDOWN)
{
if (m.Msg >= 0x201 && m.Msg <= 0x209)
{
Point pos = new Point(m.LParam.ToInt32() & 0xffff, m.LParam.ToInt32() >> 16);
var hit = this.HitTest(pos);
switch (hit.Location)
{
case ListViewHitTestLocations.AboveClientArea:
case ListViewHitTestLocations.BelowClientArea:
case ListViewHitTestLocations.LeftOfClientArea:
case ListViewHitTestLocations.RightOfClientArea:
case ListViewHitTestLocations.None:
return;
}
}
}
base.WndProc(ref m);
}
public static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, ref LVHITTESTINFO ht);
public static int HitTest(ObjectListView olv, ref LVHITTESTINFO hittest)
{
return (int)NativeMethods.SendMessage(olv.Handle, olv.View == View.Details ? LVM_SUBITEMHITTEST : LVM_HITTEST, -1, ref hittest);
}
public static extern int SendMessage(HandleRef hWnd,
int msg,
IntPtr wParam,
ref LVHITTESTINFO lParam);
private static extern int SendMessage(IntPtr hWnd, int msg, int wParam, ref LVHITTESTINFO ht);
private void ListView_SubItemHitTest(MouseEventsTypes met)
{
LVHITTESTINFO lvh = new LVHITTESTINFO();
lvh.pt = PointToClient(Control.MousePosition);
IntPtr ptr = Marshal.AllocHGlobal( Marshal.SizeOf(lvh) );
Marshal.StructureToPtr(lvh, ptr, true);
SendMessage(Handle, LVM_SUBITEMHITTEST, IntPtr.Zero, ptr);
lvh = (LVHITTESTINFO)Marshal.PtrToStructure(ptr, typeof(LVHITTESTINFO));
Marshal.FreeHGlobal(ptr);
// check if the item is valid
if ((lvh.iItem >= 0) || (lvh.iSubItem >= 0))
{
ItemSubItemClickEventArgs args = new ItemSubItemClickEventArgs(lvh.iItem, lvh.iSubItem, met);
this.OnItemSubItemClick(args);
}
else
this.Cursor = Cursors.Default;
}
public static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, ref LVHITTESTINFO ht);
public static extern int SendMessage(IntPtr hwnd, uint msg, uint wParam, ref LVHITTESTINFO lParam);
public static extern IntPtr SendMessage(HandleRef hWnd,
int msg,
IntPtr wParam,
ref LVHITTESTINFO lParam);
private static extern IntPtr SendHitTestMessage(HandleRef hWnd, int msg, int wParam, LVHITTESTINFO lParam);
public static int HitTest(ObjectListView olv, ref LVHITTESTINFO hittest)
{
return((int)NativeMethods.SendMessage(olv.Handle, olv.View == View.Details ? LVM_SUBITEMHITTEST : LVM_HITTEST, -1, ref hittest));
}
static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress,
ref LVHITTESTINFO lpBuffer, int nSize, ref int lpNumberOfBytesRead);
public static extern IntPtr SendMessage_LvHitTest(IntPtr hWnd, int Msg, IntPtr nIndex, ref LVHITTESTINFO pHitTestInfo);
internal static extern int SendMessage(IntPtr hWnd, int msg, int wParam, ref LVHITTESTINFO lParam);
static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress,
ref LVHITTESTINFO lpBuffer, int nSize, ref int lpNumberOfBytesRead);
private static extern bool SendMessage(IntPtr hWnd, Int32 msg, Int32 wParam, ref LVHITTESTINFO lParam);
/// <summary>
/// 指定の座標にアイコンがないか
/// </summary>
/// <param name="hwnd"></param>
/// <param name="x"></param>
/// <param name="y"></param>
/// <returns>アイコンがない場合はtrue</returns>
private bool IsHitTestNoIcon(IntPtr hwnd, int x, int y)
{
int pID = 0;
IntPtr hProcess = IntPtr.Zero;
IntPtr p = IntPtr.Zero;
try
{
POINT pt = new POINT();
pt.x = x;
pt.y = y;
ScreenToClient(hwnd, ref pt);
GetWindowThreadProcessId(hwnd, ref pID);
hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE, false, pID);
if (hProcess != IntPtr.Zero)
{
LVHITTESTINFO lhi = new LVHITTESTINFO();
int dw = 0;
lhi.pt = pt;
p = VirtualAllocEx(hProcess, IntPtr.Zero,
Marshal.SizeOf(lhi), MEM_COMMIT, PAGE_READWRITE);
WriteProcessMemory(hProcess, p, ref lhi, Marshal.SizeOf(lhi), ref dw);
SendMessage(hwnd, LVM_SUBITEMHITTEST, IntPtr.Zero, p);
ReadProcessMemory(hProcess, p, ref lhi, Marshal.SizeOf(lhi), ref dw);
return lhi.iItem < 0;
}
}
finally
{
if (p != IntPtr.Zero)
VirtualFreeEx(hProcess, p, 0, MEM_RELEASE);
if (hProcess != IntPtr.Zero)
CloseHandle(hProcess);
}
return false;
}
private static extern bool SendMessage(IntPtr hWnd, Int32 msg, Int32 wParam, ref
LVHITTESTINFO lParam);
