public static extern void SendMessage(IntPtr hWnd, int msg, int wParam, ref TBBUTTONINFO lParam);
TBBUTTONINFO GetButtonInfo(int index)
{
ToolBarItem item = items[index];
TBBUTTONINFO tbi = new TBBUTTONINFO();
tbi.cbSize = Marshal.SizeOf(typeof(TBBUTTONINFO));
tbi.dwMask = (int)(ToolBarButtonInfoFlags.TBIF_IMAGE | ToolBarButtonInfoFlags.TBIF_STATE |
ToolBarButtonInfoFlags.TBIF_STYLE | ToolBarButtonInfoFlags.TBIF_COMMAND | ToolBarButtonInfoFlags.TBIF_SIZE);
tbi.idCommand = index;
tbi.iImage = (int)ToolBarButtonInfoFlags.I_IMAGECALLBACK;
tbi.fsState = 0;
tbi.cx = 0;
tbi.lParam = IntPtr.Zero;
tbi.pszText = IntPtr.Zero;
tbi.cchText = 0;
if ( item.Style == ToolBarItemStyle.ComboBox )
{
tbi.fsStyle = (int)(ToolBarButtonStyles.TBSTYLE_BUTTON) ;
tbi.cx = (short)item.ComboBox.Width;
WindowsAPI.SetParent(item.ComboBox.Handle, Handle);
}
else if ( item.Text != null && item.Text != string.Empty )
{
tbi.fsStyle = (int)(ToolBarButtonStyles.TBSTYLE_BUTTON);
tbi.cx = MARGIN;
if ( item.Image != null )
tbi.cx += (short)(item.Image.Size.Width + MARGIN);
if ( item.Style == ToolBarItemStyle.DropDownButton )
tbi.cx += DROWPDOWN_ARROW_WIDTH;
Graphics g = CreateGraphics();
string currentText = item.Text;
int amperSandIndex = currentText.IndexOf('&');
if ( amperSandIndex != -1 )
currentText = item.Text.Remove(amperSandIndex, 1);
Size size = TextUtil.GetTextSize(g, currentText, SystemInformation.MenuFont);
g.Dispose();
if ( barType == BarType.MenuBar)
{
tbi.cx += (short)(size.Width + 2*MENUTEXT_MARGIN);
}
else
tbi.cx += (short)(size.Width + 2*MARGIN);
tbi.dwMask |= (int)ToolBarButtonInfoFlags.TBIF_TEXT;
tbi.pszText = Marshal.StringToHGlobalAuto(item.Text + "\0");
tbi.cchText = item.Text.Length;
if ( IsCommonCtrl6() && barType != BarType.MenuBar )
{
// If we let the operating system do the drawing
// the DROWPDOWN_ARROW_WIDTH is slightly bigger than
// the value we are using add some padding to compensate
tbi.cx += 6;
}
}
else
{
tbi.fsStyle = (int)(ToolBarButtonStyles.TBSTYLE_BUTTON | ToolBarButtonStyles.TBSTYLE_AUTOSIZE );
tbi.cx = 0;
}
if (!item.Visible)
tbi.fsState |= (int)ToolBarButtonStates.TBSTATE_HIDDEN;
if (item.Style == ToolBarItemStyle.Separator)
{
tbi.fsStyle |= (int)ToolBarButtonStyles.TBSTYLE_SEP;
}
else
{
if (item.Enabled)
tbi.fsState |= (int)ToolBarButtonStates.TBSTATE_ENABLED;
if ( item.Style == ToolBarItemStyle.DropDownButton )
tbi.fsStyle |= (int)ToolBarButtonStyles.TBSTYLE_DROPDOWN;
if (item.Style == ToolBarItemStyle.PushButton)
if (item.Checked)
tbi.fsState |= (int)ToolBarButtonStates.TBSTATE_CHECKED;
}
if (item.Style == ToolBarItemStyle.Separator )
tbi.iImage = (int)ToolBarButtonInfoFlags.I_IMAGENONE;
else if (item.Image != null)
tbi.iImage = index;
return tbi;
}
public static extern void SendMessage(IntPtr hWnd, int msg, int wParam, ref TBBUTTONINFO lParam);