Advanced MFC Programming

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Chapter 16. Context Sensitive Help The edit box and radio button still use the default style, whose help window contains standard menu and buttons. The help windows of push button and combo box controls are implemented by pop up window, which is a smaller window with a yellowish background, and does not contain other controls (Figure 16-10). By passing different parameters to function CWinApp::WinHelp(…), we can activate “Help Topic” dialog box. Also, we can adjust its position and size of the help window before it is displayed,. Display help in a pop up window Figure 16-10. Pop up Help Window Summary 1) In order to implement context sensitive help for a command, we need to add a footnote to the “AfxCore.rtf” file, then link the command ID to the tag of the footnote. 2) Usually the help ID is generated by prefixing character(s) to the resource ID of the command, and the value of the help ID is generated by adding a fixed number to the value of the resource ID. 3) The resource ID can be linked to a footnote tag by specifying an alias name in “.hpj” file. 4) A help page can be referenced either from other help pages or from the application. 5) To support context sensitive help in the dialog box, we need to call function CWnd:: SetWindowContextHelpId(…) for every common control that will support context sensitive help, and override function CWnd::OnHelpInfo(…) to activate customized help window. 6) By default, function CWnd::OnHelpInfo(…) does not support context sensitive help for common controls. In this case, we can call CWinApp::WinHelp(…) to customize the default help implementation. 7) When calling function CWinApp::WinHelp(…), we can use various parameters to activate help windows in different styles. For example, using parameter HELP_CONTEXTPOPUP will invoke a pop up help window. 490
Appendix A. Virtual-key Codes Appendix A. Virtual-key Codes The following table lists all the virtual-key codes used by the Microsoft Windows operating system. Instead of using numerical values, a programmer can use symbolic names to indicate a specific button of the mouse or a key of the keyboard. Mouse Buttons: Symbolic constant name Value (hexadecimal) Meaning VK_LBUTTON 01 Left mouse button VK_MBUTTON 04 Middle mouse button (three-button mouse) VK_RBUTTON 02 Right mouse button Editing Keys (These keys are most commonly used in a text editor): Symbolic constant name Value (hexadecimal) Meaning VK_BACK 08 BACKSPACE key VK_TAB 09 TAB key VK_RETURN 0D ENTER key VK_SHIFT 10 SHIFT key VK_CONTROL 11 CTRL key VK_CAPITAL 14 CAPS LOCK key VK_ESCAPE 1B ESC key VK_SPACE 20 SPACEBAR VK_PRIOR 21 PAGE UP key VK_NEXT 22 PAGE DOWN key VK_END 23 END key VK_HOME 24 HOME key VK_LEFT 25 LEFT ARROW key VK_UP 26 UP ARROW key VK_RIGHT 27 RIGHT ARROW key VK_DOWN 28 DOWN ARROW key VK_INSERT 2D INS key VK_DELETE 2E DEL key Number & Character Keys: Symbolic constant name Value (hexadecimal) Meaning VK_0 30 0 key VK_1 31 1 key VK_2 32 2 key VK_3 33 3 key VK_4 34 4 key VK_5 35 5 key VK_6 36 6 key VK_7 37 7 key 491
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Advanced MFC Programming Supporting
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Checking a Menu Item 2.2 Right Clic
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Trapping Double Clicking Message Re
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COMMON DIALOG BOXES 7.1 File Open a
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9.1 Outputting Text Using Different
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Summary SAMPLE: SIMPLE PAINT 11.0 P
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13.2 Creating Applications without
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Functions Implementing Comparisons
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Chapter 1. Tool Bar and Dialog Bar
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Chapter 2. Menu Chapter 2 Menu Menu
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Chapter 2. Menu ON_COMMAND(ID_EDIT_
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Chapter 2. Menu “clipboard”. We
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Chapter 2. Menu Using Class CMenu W
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Chapter 2. Menu } After implementin
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Chapter 2. Menu ); UINT nPosition,
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Chapter 2. Menu void CMenuDoc::OnEd
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Chapter 2. Menu } In the sample, bi
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Chapter 2. Menu Message Mapping for
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Chapter 2. Menu We can implement bi
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Chapter 2. Menu CDC *ptrDC; CDC dcM
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Chapter 2. Menu Because the popup m
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Chapter 3. Splitter Window Chapter
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Chapter 3. Splitter Window function
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Chapter 3. Splitter Window BOOL CSp
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Chapter 3. Splitter Window In the a
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Chapter 3. Splitter Window Sample S
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Chapter 3. Splitter Window WM_LBUTT
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Chapter 4. Button Chapter 4 Buttons
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Chapter 4. Button Use string text a
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Chapter 4. Button function, first t
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Chapter 4. Button Now we can remove
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Chapter 4. Button } ( m_bBmpCheck ?
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Chapter 4. Button using bit-wise AN
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Chapter 4. Button Overriding Functi
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Chapter 4. Button …… First pBit
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Chapter 4. Button Using Class MCBit
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Chapter 4. Button The button’s ID
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Chapter 4. Button However, since me
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Chapter 4. Button Here, we use subc
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Chapter 5. Common Controls command
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Chapter 5. Common Controls ((CSpinB
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Chapter 5. Common Controls } The in
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Chapter 5. Common Controls The “S
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Chapter 5. Common Controls button
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Chapter 5. Common Controls In this
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Chapter 5. Common Controls (CBN_CLO
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Chapter 5. Common Controls compare
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Chapter 5. Common Controls } ptrEdi
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Chapter 5. Common Controls ……
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Chapter 5. Common Controls void CWn
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Chapter 5. Common Controls Five loc
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Chapter 5. Common Controls This fun
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Chapter 5. Common Controls After cr
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Chapter 5. Common Controls typedef
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Chapter 5. Common Controls Using th
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Chapter 5. Common Controls Paramete
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Chapter 5. Common Controls void MCT
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Chapter 5. Common Controls modifica
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Chapter 5. Common Controls In funct
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Chapter 5. Common Controls Changing
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Chapter 5. Common Controls m_tabCtr
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Chapter 5. Common Controls Custom R
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Chapter 6. Dialog Box Chapter 6 Dia
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Chapter 6. Dialog Box void CMLDialo
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Chapter 6. Dialog Box } Function CP
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Chapter 6. Dialog Box Everything is
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Chapter 6. Dialog Box } MINMAXINFO;
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Chapter 6. Dialog Box Sample Sampel
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Chapter 6. Dialog Box } brush=(HBRU
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Chapter 6. Dialog Box wndA.GetWindo
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Chapter 6. Dialog Box rectStaticGrp
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Chapter 6. Dialog Box } TOOLTIPTEXT
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Chapter 6. Dialog Box ) { } if ( )
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Chapter 6. Dialog Box pWndCtrl=GetW
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Chapter 6. Dialog Box Sample 6.8-2\
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Chapter 6. Dialog Box } // handle t
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Chapter 6. Dialog Box 1) Tracking s
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Chapter 7. Common Dialog Boxes DWOR
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Chapter 7. Common Dialog Boxes dial
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Chapter 7. Common Dialog Boxes Alth
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Chapter 7. Common Dialog Boxes } NU
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Chapter 7. Common Dialog Boxes Stc3
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Chapter 7. Common Dialog Boxes DWOR
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Chapter 7. Common Dialog Boxes Comm
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Chapter 7. Common Dialog Boxes Retr
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Chapter 7. Common Dialog Boxes 7.9
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Chapter 7. Common Dialog Boxes } }
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Chapter 8. DC, Pen, Brush and Palet
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Chapter 9. Font Here, member lfFace
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Chapter 9. Font } dlg.m_bBgdStyle=m
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Chapter 9. Font The first element o
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Chapter 9. Font int CALLBACK EnumFo
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Chapter 9. Font }; Variable m_nRang
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Chapter 9. Font Frame border is gra
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Chapter 9. Font CFont *ptrFont; if(
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Chapter 9. Font POINT pt; CClientDC
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Chapter 9. Font } if(dlg.DoModal()
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Chapter 9. Font In this function, W
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Chapter 9. Font } CScrollView::OnKe
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Chapter 9. Font …… } nKeyState=
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Chapter 9. Font To check out if the
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Chapter 9. Font the same, it indica
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Chapter 9. Font } if(m_nSelIndexBgn
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Chapter 9. Font GHND GPTR Same with
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Chapter 9. Font …… } { Since th
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Chapter 9. Font Function CDocument:
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Chapter 9. Font …… void CGDIDoc
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Chapter 9. Font …… { } UpdateAl
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Chapter 9. Font …… …… case
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Chapter 9. Font client window to be
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Chapter 10. Bitmap ); DWORD dwRop T
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Chapter 10. Bitmap Sample 10.1-2\GD
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Chapter 10. Bitmap The next part of
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Chapter 10. Bitmap Sample Sample 10
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Chapter 10. Bitmap Member bfType mu
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Chapter 10. Bitmap fuColorUse Speci
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Chapter 10. Bitmap if(hData != NULL
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Chapter 10. Bitmap …… } rgbQuad
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Chapter 10. Bitmap DIB Section Both
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Chapter 10. Bitmap } } if(m_pBmpMas
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Chapter 10. Bitmap …… m_pBmpOld
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Chapter 10. Bitmap BITMAP bm; …
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Chapter 10. Bitmap Draw this portio
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Chapter 10. Bitmap 1) Paint the des
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Chapter 10. Bitmap color bitmap, bu
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Chapter 10. Bitmap 10) The total im
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Chapter 11. Sample: Simple Paint Af
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Chapter 11. Sample: Simple Paint CG
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Chapter 11. Sample: Simple Paint 1)
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Chapter 13. Adding Special Features
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Chapter 14. Views ID_EDIT_PASTE pas
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Chapter 14. Views Another feature o
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Chapter 14. Views szFind=newName; s
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Chapter 14. Views ON_COMMAND(ID_BUT
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Chapter 14. Views IDB_BITMAP_CLOSEF
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Page 509 and 510: Appendix A. Virtual-key Codes Funct
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Page 517 and 518: Index Index #if, 416 #pragma, 416 .
Page 519 and 520: Index CDC::SetPixel, 321 CDC::SetRO
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Page 523 and 524: Index CWnd::SetMenu, 55 CWnd::SetTi
Page 525 and 526: Index HBRUSH, 201 HCURSOR, 262 HDAT
Page 527 and 528: Index Background palette, 224 Chang
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