C++ – Setting a column style? (Unmanaged c++)

c++listviewunmanagedwinapi

I'm currently able to set a listview style VIA the ListView_SetExtendedListViewStyle method, however this makes all columns have the same style. My goal is to only modify one column (to basically have the LVS_EX_UNDERLINEHOT|LVS_EX_UNDERLINECOLD|LVS_EX_TWOCLICKACTIVATE style).

Is there a way to modify the style of only one column and not the entire table?

Edit: Or even a way to custom draw the cell?

Best Solution

If you use the WTL framework then there is a very useful CCustomDraw class that you can use to easily intercept NM_CUSTOMDRAW messages and draw your own listview content.

There is a good CodeProject article on custom draw using WTL here.

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C# – ListView Final Column Autosize creates scrollbar

ObjectListView (an open source wrapper around .NET WinForms ListView) allows this "expand-last-column-to-fill-available-space". It's actually more difficult to get right than it first appears -- do not believe anyone who tells you otherwise :)

If you use ObjectListView, you get the solution to that problem -- and several others -- for free. But if you want to do all the work yourself, you'll need to:

use ClientSize instead of DisplayRectangle (as @zxpro has already said)
use Layout event rather than Resize event.
listen for ColumnResized event and do the same work
not do the auto resizing in design mode -- it gets very confusing.

The trickiest problem only appears when the window shrinks -- the horizontal scroll bar flickers annoyingly and sometimes remains after the shrinking is finished. Which appears to be exactly what is happening in your case.

The solution is to intercept the WM_WINDOWPOSCHANGING message and resize the ListView to what the new size is going to be.

protected override void WndProc(ref Message m) {
    switch (m.Msg) {
        case 0x46: // WM_WINDOWPOSCHANGING
            this.HandleWindowPosChanging(ref m);
            base.WndProc(ref m);
            break;
        default:
            base.WndProc(ref m);
            break;
    }
}

protected virtual void HandleWindowPosChanging(ref Message m) {
    const int SWP_NOSIZE = 1;

    NativeMethods.WINDOWPOS pos = (NativeMethods.WINDOWPOS)m.GetLParam(typeof(NativeMethods.WINDOWPOS));
    if ((pos.flags & SWP_NOSIZE) == 0) {
        if (pos.cx < this.Bounds.Width) // only when shrinking
            // pos.cx is the window width, not the client area width, so we have to subtract the border widths
            this.ResizeFreeSpaceFillingColumns(pos.cx - (this.Bounds.Width - this.ClientSize.Width));
    }
}

C# – Sorting A ListView By Column

Forget about your custom sorter. Start over using the code at the following page. It will show you how to define a class that inherits from the IComparer interface. Each line is commented out, so you can actually see what is happening. The only potential complication is how you are retrieving your Listview Items from your Listview control. Get those squared away and all you need to do is copy and paste the IComparer interface class and the columnClick method.

http://support.microsoft.com/kb/319401

Best Solution

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C# – ListView Final Column Autosize creates scrollbar

C# – Sorting A ListView By Column

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