There is a ctooltipCtrl class in the MFC. I want everyone to know that I have to add a prompt to specific controls or regions on ActiveX Control in a project. I started using CTooltiPCtrl, but I found that it didn't work at all. Helpless, I have written myself. A class to implement it.
This class is CTIP (including ctip.c and ctip.h)
You only need to add it in your project, you can use it.
Steps for usage:
1. CREATE (CWND * PParentWnd) during initialization.
2. Tune setText (const cstring & rstext) in Mosemove (CPOINT POINT) to set the text you want to display.
3. Tune Show (CPOINT POINT) in Mosemove (CPOINT POINT).
Instructions for use:
1.Create is used to create a window with Createex. The size of this window is 0, the title is empty, the style is WS_POPUP & BrVBARWS_CHILD & BrVBARWS_CLIPSIBLINGS
2. There is a trick here, you have to know which range when your mouse is located, so you can have two options: one, you specify the range directly (set up a create) or add a member Variables are dynamically recorded; two, you can call as follows:
CRECT RECT;
CWND * PWND = getdlgitem (id_xxx);
PWND-> GetWindowRect (& Rect);
ScreenToClient (& Re);
This can also get the current RECT. Then you can call as follows:
IF (Rect.ptinRect (Point))
{
m_tip.settext (m_varname);
m_tip.show (point);
}
Else
{
m_tip.close ();
}
3.SHOW and Close are used to display and hide prompts, mainly using CDCs in SHOW to draw programs.
Several major functions specific code:
Bool CTooltip2 :: Create (CWND * PParentWnd)
{
Assert (this! = Null);
Assert (pParentWnd! = NULL);
m_pparentwnd = pparentwnd;
// Create Font
CRECT RectinitialSize (0,0,0,0); // Initial window size. Will Be Dynamically
Return Createex (NULL, NULL, NULL, WS_POPUP | WS_CHILD | WS_CLIPSIBLINGS,
RectInitialSize, PparentWnd, Null, NULL
}
BOOL CTooltip2 :: Show (const cpoint & rurrentpoint)
{
Assert (this! = Null);
Assert (m_hwnd! = Null);
// Is Text Empty or Tool Tip already displayed?
IF (m_sztext.isempty () || m_bshowstatus)
Return False;
m_ptcurrent = rcurrentpoint;
M_BSHOWSTATUS = True;
// Show Tool TIP
DisplayTooltip (rcurrentpoint);
Return True;
}
Void CTooltip2 :: DisplayTooltip (Const Cpoint & RcurrentPoint)
{
CDC * PDC = Getdc ();
CBRUSH * POLDBRUSH;
CFont * PoldFont;
PoldFont = PDC-> SelectObject (& m_font);
CSIZE SIZE = PDC-> GetTextExtent; PDC-> LPTODP (& size);
// Form TooltIP Rectangle
CRECT RectTooltip (rcurrentpoint.x, rcurrentpoint.y,
RcurrentPoint.x size.cx 7, rcurrentpoint.y size.cy 2);
// Draw TooltIP Rect and Text
PDC-> setbkmode (transparent);
Cbrush Brushtooltip (GetsysColor (Color_Infobk);
Poldbrush = PDC-> SelectObject (& Brushtooltip);
// Create and SELECT Thick Black Pen
CPEN Penblack (PS_SOLID, 0, ColorRef (RGB (0, 0, 0));
CPEN * POLDPEN = PDC-> SELECTOBJECT (& Penblack);
// Draw Rectangle Filled with Color_Infobk
PDC-> Rectangle (0, 0, RectTooltip.width (), RectTooltip.Height ());
// Draw Tooltip Text
PDC-> setTextColor (getsyscolor (color_infotext)); // Tool Tip Color Set in
// Control Panel Settings
PDC-> setTextAlign (TA_LEFT);
PDC-> Textout (3, 1, m_sztext);
CRECT RECTWND = RectTooltip;
m_pparentWnd-> ClientToscreen (RectWnd); // Convert from Client To Screen
Cpoint pttooltipleft = RectWnd.Topleft ();
// Now Display Tooltip
SetWindowPos (& Wndtop, PtTooltiPLEFT.X 1, PTTooltiPLEFT.Y 1, RectWnd.Width (),
RectWnd.Height (), SWP_SHOWINDOW & Brvbarswp_noownerzorder & brvbarswp_noactivate;
// Put Back Old Objects
PDC-> SELECTOBJECT (POLDBRUSH);
PDC-> SELECTOBJECT (POLDPEN);
PDC-> SELECTOBJECT (POLDFONT);
ReleaseDC (PDC);
}
