CListCtrl 用鼠标选择多行

There is a CListCtrl with SetExtendedStyle (LVS_EX_GRIDLINES | LVS_EX_FULLROWSELECT), a single selection is false. I want to be able to select multiple lines with the mouse. When starting selection from an empty area, it works:

It does not work if I start the selection not from an empty area. Selection frame does not appear:

如何让它发挥作用？

改变通用控件的工作方式并不是一个好主意，因为用户希望它们像在所有其他应用程序中一样运行。

ListView (CListCtrl) 不支持此功能，但如果您不关心进行非拖动选择，您可以对控件进行子类化并排序使其工作：

WNDPROC g_OrgWndProc = 0;

static LRESULT CALLBACK LVSubClass(HWND hWnd, UINT Msg, WPARAM wp, LPARAM lp)
{
    if (Msg == WM_LBUTTONDOWN)
    {
        UINT oldexstyle = (UINT) ListView_SetExtendedListViewStyleEx(hWnd, LVS_EX_FULLROWSELECT, 0);
        LRESULT oldcolw = ListView_GetColumnWidth(hWnd, 0);
        ListView_SetColumnWidth(hWnd, 0, 0);
        PostMessage(hWnd, WM_APP, oldexstyle, oldcolw); // Restore delay
        return CallWindowProc(g_OrgWndProc, hWnd, Msg, wp, lp);
    }
    if (Msg == WM_APP)
    {
        ListView_SetExtendedListViewStyleEx(hWnd, LVS_EX_FULLROWSELECT, (UINT) wp);
        ListView_SetColumnWidth(hWnd, 0, (UINT) lp);
    }
    return CallWindowProc(g_OrgWndProc, hWnd, Msg, wp, lp);
}

...

g_OrgWndProc = (WNDPROC) SetWindowLongPtr(listviewhandle, GWLP_WNDPROC, (LONG_PTR) LVSubClass);

This code removes the full-row-select style and makes the first column "invisible" when the listview handles the initial mouse down message so that the internal listview hit-testing returns LVHT_NOWHERE and marquee-selection can start. You should consider this to be a ugly hack and I would recommend that you only intercept WM_LBUTTONDOWN when Control or Shift is down...