Method StretchLastColumn

tableview.go:1512–1574

StretchLastColumn makes the last column take up all remaining horizontal space of the *TableView. The effect of this is not persistent.

()

//
// The effect of this is not persistent.
func (tv *TableView) StretchLastColumn() error {
	colCount := tv.visibleColumnCount()
	if colCount == 0 {
		return nil
	}

	var hwnd win.HWND
	frozenColCount := tv.visibleFrozenColumnCount()
	if colCount-frozenColCount == 0 {
		hwnd = tv.hwndFrozenLV
		colCount = frozenColCount
	} else {
		hwnd = tv.hwndNormalLV
		colCount -= frozenColCount
	}

	var lp uintptr
	if tv.scrollbarOrientation&Horizontal != 0 {
		lp = win.LVSCW_AUTOSIZE_USEHEADER
	} else {
		width := tv.ClientBoundsPixels().Width

		lastIndexInLV := -1
		var lastIndexInLVWidth int

		for _, tvc := range tv.columns.items {
			var offset int
			if !tvc.Frozen() {
				offset = frozenColCount
			}

			colWidth := tv.IntFrom96DPI(tvc.Width())
			width -= colWidth

			if index := int32(offset) + tvc.indexInListView(); int(index) > lastIndexInLV {
				lastIndexInLV = int(index)
				lastIndexInLVWidth = colWidth
			}
		}

		width += lastIndexInLVWidth

		if hasWindowLongBits(tv.hwndNormalLV, win.GWL_STYLE, win.WS_VSCROLL) {
			width -= int(win.GetSystemMetricsForDpi(win.SM_CXVSCROLL, uint32(tv.DPI())))
		}

		lp = uintptr(maxi(0, width))
	}

	if lp > 0 {
		if 0 == win.SendMessage(hwnd, win.LVM_SETCOLUMNWIDTH, uintptr(colCount-1), lp) {
			return newError("LVM_SETCOLUMNWIDTH failed")
		}

		if dpi := tv.DPI(); dpi != tv.dpiOfPrevStretchLastColumn {
			tv.dpiOfPrevStretchLastColumn = dpi

			tv.Invalidate()