private int scUpDown_SubClassedWndProc(ref Message m)
{
switch (m.Msg)
{
case Win32.WM_PAINT:
{
//------------------------
// redraw
IntPtr hDC = Win32.GetWindowDC(scUpDown.Handle);
Graphics g = Graphics.FromHdc(hDC);
DrawIcons(g);
g.Dispose();
Win32.ReleaseDC(scUpDown.Handle, hDC);
//------------------------
// return 0 (processed)
m.Result = IntPtr.Zero;
//------------------------
// validate current rect
Rectangle rect = new Rectangle();
Win32.GetClientRect(scUpDown.Handle, ref rect);
Win32.ValidateRect(scUpDown.Handle, ref rect);
//------------------------
}
return(1);
}
return(0);
}
private void UpdateUpDown()
{
if (bUpDown)
{
if (Win32.IsWindowVisible(scUpDown.Handle))
{
Rectangle rect = new Rectangle();
Win32.GetClientRect(scUpDown.Handle, ref rect);
Win32.InvalidateRect(scUpDown.Handle, ref rect, true);
}
}
}
internal void DrawIcons(Graphics g)
{
if ((leftRightImages == null) || (leftRightImages.Images.Count != 4))
{
return;
}
//----------------------------
// calc positions
Rectangle TabControlArea = this.ClientRectangle;
Rectangle r0 = new Rectangle();
Win32.GetClientRect(scUpDown.Handle, ref r0);
Brush br = new SolidBrush(mBackColor);
g.FillRectangle(br, r0);
br.Dispose();
Pen border = new Pen(mShadowColor);
Rectangle rborder = r0;
rborder.Inflate(-1, -1);
g.DrawRectangle(border, rborder);
border.Dispose();
int nMiddle = (r0.Width / 2);
int nTop = (r0.Height - 16) / 2;
int nLeft = (nMiddle - 16) / 2;
Rectangle r1 = new Rectangle(nLeft, nTop, 16, 16);
Rectangle r2 = new Rectangle(nMiddle + nLeft, nTop, 16, 16);
//----------------------------
//----------------------------
// draw buttons
Image img = leftRightImages.Images[1];
if (img != null)
{
if (this.TabCount > 0)
{
Rectangle r3 = this.GetTabRect(0);
if (r3.Left < TabControlArea.Left)
{
g.DrawImage(img, r1);
}
else
{
img = leftRightImages.Images[3];
if (img != null)
{
g.DrawImage(img, r1);
}
}
}
}
img = leftRightImages.Images[0];
if (img != null)
{
if (this.TabCount > 0)
{
Rectangle r3 = this.GetTabRect(this.TabCount - 1);
if (r3.Right > (TabControlArea.Width - r0.Width))
{
g.DrawImage(img, r2);
}
else
{
img = leftRightImages.Images[2];
if (img != null)
{
g.DrawImage(img, r2);
}
}
}
}
//----------------------------
}
