private int scUpDown_SubClassedWndProc(ref Message m)
{
switch (m.Msg)
{
case CustomWin32.WM_PAINT:
{
//------------------------
// redraw
IntPtr hDC = CustomWin32.GetWindowDC(scUpDown.Handle);
Graphics g = Graphics.FromHdc(hDC);
DrawIcons(g);
g.Dispose();
CustomWin32.ReleaseDC(scUpDown.Handle, hDC);
//------------------------
// return 0 (processed)
m.Result = IntPtr.Zero;
//------------------------
// validate current rect
Rectangle rect = new Rectangle();
CustomWin32.GetClientRect(scUpDown.Handle, ref rect);
CustomWin32.ValidateRect(scUpDown.Handle, ref rect);
//------------------------
}
return(1);
}
return(0);
}
private void UpdateUpDown()
{
if (bUpDown)
{
if (CustomWin32.IsWindowVisible(scUpDown.Handle))
{
Rectangle rect = new Rectangle();
CustomWin32.GetClientRect(scUpDown.Handle, ref rect);
CustomWin32.InvalidateRect(scUpDown.Handle, ref rect, true);
}
}
}
private void FindUpDown()
{
bool bFound = false;
// find the UpDown control
IntPtr pWnd = CustomWin32.GetWindow(this.Handle, CustomWin32.GW_CHILD);
while (pWnd != IntPtr.Zero)
{
//----------------------------
// Get the window class name
char[] className = new char[33];
int length = CustomWin32.GetClassName(pWnd, className, 32);
string s = new string(className, 0, length);
//----------------------------
if (s == "msctls_updown32")
{
bFound = true;
if (!bUpDown)
{
//----------------------------
// Subclass it
this.scUpDown = new SubClass(pWnd, true);
this.scUpDown.SubClassedWndProc += new SubClass.SubClassWndProcEventHandler(scUpDown_SubClassedWndProc);
//----------------------------
bUpDown = true;
}
break;
}
pWnd = CustomWin32.GetWindow(pWnd, CustomWin32.GW_HWNDNEXT);
}
if ((!bFound) && (bUpDown))
{
bUpDown = false;
}
}
internal void DrawIcons(Graphics g)
{
if ((leftRightImages == null) || (leftRightImages.Images.Count != 4))
{
return;
}
//----------------------------
// calculate positions
Rectangle TabControlArea = this.ClientRectangle;
Rectangle r0 = new Rectangle();
CustomWin32.GetClientRect(scUpDown.Handle, ref r0);
Brush br = new SolidBrush(Color.FromArgb(120, 135, 156));
g.FillRectangle(br, r0);
br.Dispose();
Pen border = new Pen(SystemColors.ControlDark);
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);
}
}
}
}
//----------------------------
}
//public override Rectangle DisplayRectangle
//{
// get
// {
// Rectangle rect = base.DisplayRectangle;
// return new Rectangle(rect.Left - 4, rect.Top - 1, rect.Width + 8, rect.Height + 5);
// }
//}
internal void DrawControl(Graphics g)
{
if (!Visible)
{
return;
}
Rectangle TabControlArea = this.ClientRectangle;
Rectangle TabArea = this.DisplayRectangle;
// fill client area
RenderControlBackground(g, TabControlArea);
// draw panel border
int nDelta = SystemInformation.Border3DSize.Width;
Pen border = new Pen(SystemColors.Control);
TabArea.Inflate(nDelta, nDelta);
g.DrawRectangle(border, TabArea);
border.Dispose();
// clip region for drawing tabs
Region rsaved = g.Clip;
Rectangle rreg;
int nWidth = TabArea.Width + nMargin;
if (bUpDown)
{
// exclude updown control for painting
if (CustomWin32.IsWindowVisible(scUpDown.Handle))
{
Rectangle rupdown = new Rectangle();
CustomWin32.GetWindowRect(scUpDown.Handle, ref rupdown);
Rectangle rupdown2 = this.RectangleToClient(rupdown);
nWidth = rupdown2.X;
}
}
rreg = new Rectangle(TabArea.Left, TabControlArea.Top, nWidth - nMargin, TabControlArea.Height);
g.SetClip(rreg);
// draw tabs
for (int i = 0; i < this.TabCount; i++)
{
DrawTab(g, this.TabPages[i], i);
}
g.Clip = rsaved;
//----------------------------
//----------------------------
// draw background to cover flat border areas
if (this.SelectedTab != null)
{
TabPage tabPage = this.SelectedTab;
Color color = Color.White;
border = new Pen(color);
TabArea.Offset(1, 1);
TabArea.Width -= 2;
TabArea.Height -= 2;
g.DrawRectangle(border, TabArea);
TabArea.Width -= 1;
TabArea.Height -= 1;
g.DrawRectangle(border, TabArea);
border.Dispose();
}
}
