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wxWidgets - Cross-Platform GUI Library

Errata for Cross-Platform GUI Programming with wxWidgets

Errors will be corrected in future reprints. Please report errors to Julian Smart at julian@anthemion.co.uk.

Error on P. xii

At the top of the page, the page reference “31” should read “131”.

Error on P. 1 Reported 2006-09-21

At the end of the first paragraph, “available parts” should read “available ports”.

Error on P. 52

In the text: “SetOwnForegroundColour is the same as SetOwnForegroundColour but the color is not inherited by the window’s child”, the second SetOwnForegroundColour should be “SetForegroundColour”.

Error on P. 63

Figure 4-5 repeats the MDI screenshot from Figure 4-6, and should instead show the following picture.

wxMiniFrame Sample

Error on P. 72

In the example code for the wxPanel, this code:

wxPanel* panel = new wxPanel(frame, wxID_ANY,
    wxDefaultPosition, (500,300));

should read:

wxPanel* panel = new wxPanel(frame, wxID_ANY,
    wxDefaultPosition, wxSize(500,300));

Error on P. 73

This example:

wxNotebook *notebook = new wxNotebook(this, wxID_ANY, wxDefaultPosition, wxDefaultSize);

wxImageList *imageList = new wxImageList(16,16,true, 3);
imageList->Add(wxIcon(copy_xpm));
imageList->Add(wxIcon(paste_xpm));
imageList->Add(wxIcon(cut_xpm));

wxPanel1 *window1 = new wxPanel(notebook, wxID_ANY);
wxPanel2 *window2 = new wxPanel(notebook, wxID_ANY);
wxPanel3 *window3 = new wxPanel(notebook, wxID_ANY);

notebook->AddPage(window1, wxT("Tab One"), true,0);
notebook->AddPage(window2, wxT("Tab two"), false,1);
notebook->AddPage(window3, wxT("Tab three"), false,2);

should instead read:

wxImageList *imageList = new wxImageList(16,16,true, 3);
imageList->Add(wxIcon(copy_xpm));
imageList->Add(wxIcon(cut_xpm));
imageList->Add(wxIcon(paste_xpm));
notebook->SetImageList(imageList);

wxPanel *window1 = new wxPanel(notebook, wxID_ANY);
wxPanel *window2 = new wxPanel(notebook, wxID_ANY);
wxPanel *window3 = new wxPanel(notebook, wxID_ANY);

notebook->AddPage(window1, wxT("Tab One"), true,0);
notebook->AddPage(window2, wxT("Tab two"), false,1);
notebook->AddPage(window3, wxT("Tab three"), false,2);

(remove numbering from wxPanel1, wxPanel2, and wxPanel3, add a SetImageList call, switch the ordering of the paste_xpm and cut_xpm lines to match the ordering of the tab icons in Figure 4-9, and add a comma between “false” and “2” on the last line.)

Error on P. 77

In the first example, the lines

int pixelsPerUnixX = 10;
int pixelsPerUnixY = 10;

should read:

int pixelsPerUnitX = 10;
int pixelsPerUnitY = 10;

(change Unix to Unit).

Error on P. 94 Reported 2007-11-20

In the example at the top of the page, wxCheckBox* checkbox should read wxCheckBox* checkBox (captialise the ‘b’).

Error on P. 101

Just after the radio button code example, the reference should be to Figure 4-21 and not 4-22 (which is a scrollbar).

Error on P. 109 Reported 2006-09-25

On the second to last line in the example near the top of the page, there is a missing closing parenthesis after *wxBLUE. So it should read:

text->SetDefaultStyle(wxTextAttr(*wxBLUE));

Error on P. 122 Reported 2007-12-30

In the wxMenuBar example, the line

menuBar->Append(fileMenu);

should be replaced by

menuBar->Append(fileMenu, wxT("&File"));

(the menu title was missing).

Error on P. 132 Reported 2007-12-11

On the first row below Table 5-1, “SetUser Scale” should read “SetUserScale”.

Error on P. 136

In the code example, last line before the right brace, DrawRectangle(rectToDraw); should read dc.DrawRectangle(rectToDraw);.

Error on P. 139 Reported 2007-12-11

In the second paragraph of section “Printing with wxPrinterDC …”, “You can pass it a wxPrintData after setting paper type, …” should read “You can pass it a wxPrintData object after setting paper type, …” (missing “object”).

Error on P. 141 Reported 2006-09-21

In the last paragraph, ninth line from the bottom, “dark slate gray dark turquoise” is missing a comma and should read “dark slate gray, dark turquoise”.

Error on P. 141 Reported 2007-08-7

In second code example, in the last line, wxString should be replaced by wxColour, i.e.:

wxColour color = wxTheColourDatabase->Find(name);

Error on P. 151

In DrawRotatedText, dc.SetTextForeground(wxBLACK); should read dc.SetTextForeground(*wxBLACK); (insert a missing asterisk).

Error on P. 152 Reported 2007-12-11

In the last statement of the first code example, “msg” should be replaced by “text”.

Error on P. 154 Reported 2006-09-21, re-reported 2007-12-11 as the original erratum was wrong

In the second to last line, pt.x should read points[i].x and pt.y should read points[i].y.

Error on P. 156

In the comment: “3-point sline” should read “3-point spline”.

Error on P. 158 Reported 2009-03-10

Replace these lines in the code sample (last two lines):

dcDest.SelectBitmap(wxNullBitmap);
dcSource.SelectBitmap(wxNullBitmap);

with:

dcDest.SelectObject(wxNullBitmap);
dcSource.SelectObject(wxNullBitmap);

Error on P. 159 Reported 2006-09-21

”// Draw a green rectangle outlines in red” should read “// Draw a green rectangle outlined in red” (change “outlines” to “outlined”).

Also, the spacing in the example is wrong, and should be:

// Draw a green rectangle outlined in red
dc.SetPen(*wxRED_PEN);

dc.SetBrush(*wxGREEN_BRUSH);
dc.DrawRectangle(10, 10, 100, 100);

// Now fill the green area with black (while green is found)
dc.SetBrush(*wxBLACK_BRUSH);
dc.FloodFill(50, 50, *wxGREEN, wxFLOOD_SURFACE);

// Then fill with blue (until red is encountered)
dc.SetBrush(*wxBLUE_BRUSH);
dc.FloodFill(50, 50, *wxRED, wxFLOOD_BORDER);

Error on P. 161 Reported 2007-12-11

In the last statement of the code example, (*g_printDialogData) should read g_printDialogData (remove asterisk and parentheses: g_printDialogData is a global object, not a pointer; the parentheses are unnecessary).

Error on P. 165/166 Reported 2007-12-11

Replace wxDC *dc with wxDC& dc in the argument to MyPrintout::DrawPageOne on the first line, and replace all 3 occurrences of dc-> with dc.

Error on P. 172

In the first entry of Table 6-1, the first two letters (EV) should be in the same font as the rest of the word. There is also a missing ) after EVT_LEFT_DOWN(func.

Error on P. 177 Reported 2007-12-11

In Table 6-3, the right column should end with an empty cell below the last item. Also, the last cell in the left column should have the same height as the other cells.

Error on P. 179

The text ASCII "A" (65) and ASCII A (97) should read ASCII "A" (65) and ASCII "a" (97).

Error on P. 187 Reported 2006-09-22

On the 7th line, change “näive” to “naïve” (dieresis should be on the “i” not the “a”).

Error on P. 215 Reported 2007-04-30

In the table at the top of the page, replace wxFILE_MUST_EXIT with wxFILE_MUST_EXIST (add the missing ‘s’).

Error on P. 216 Reported 2006-10-30

In the first line, remove the second closing parenthesis.

Error on P. 244 Reported 2006-09-25

The second line of code should be aligned as per the third line (missing space).

Error on P. 247

Replace ID_SAGE with ID_AGE in two instances of FindWindow(ID_SAGE).

Error on P. 248

In the following text on the second half of the page:

“We need to dig a bit deeper into how wxWidgets handles validators in order to understand what’s going on here. As we’ve seen, the default OnOK handler calls TransferDataToWindow, but before it does so, it calls Validate, vetoing the calls to TransferDataToWindow”

replace both references to TransferDataToWindow with TransferDataFromWindow.

Error on P. 273

On the fifth line in the code example, this line:

// Method 2: load from an ICO resource (Window and OS/2 only)

should be:

// Method 2: load from an ICO resource (Windows and OS/2 only)

(replace “Window” with “Windows”).

Error on P. 277 and P. 278 Reported 2006-09-01

All occurrences of SetOptionInt should be replaced by SetOption.

Error on P. 278 and P. 279 Reported 2006-09-25

wxCURSOR_WE should read wxCURSOR_SIZEWE on P. 278, sixth row of the paragraph headed “Using wxSetCursorEvent”, and also P. 279 on the fourth line of the first paragraph.

Error on P. 284

Rotate takes several arguments, not just one, so in the example, replace the line:

wxImage image2 = image1.Rotate(0.5);

with:

wxImage image2 = image1.Rotate(0.5, wxPoint(100, 100));

Error on P. 354 Reported 2006-09-25

“wxTaskBarIconSample” should read “wxTaskBarIcon Sample” (fourth line from the bottom).

Error on P. 354 Reported 2006-09-25

On the third line from the bottom, “Selecting” should not be in italics, i.e. it should read “Selecting Set New Icon”.

Error on P. 386 Reported 2007-01-23

In the example, the line “This macro declares and implements CustomerList as a hash map” should be replaced by “This macro declares and implements CustomerHash”.

Error on P. 392 Reported 2006-09-28

In the section wxPoint and wxRealPoint, the double minus should be replaced with a single minus in both cases.

Error on P. 398

In the example 7 lines from the bottom, fileMsg.Read should be file.Read.

Error on P. 408 Reported 2008-10-23

Should change zip to in the second line of the code:

// Method 2: specify the archived file in the constructor
wxZipInputStream in(wxT("test.zip"), wxT("text.txt"));
wxTextInputStream txt(zip);
wxString data;
txt >> data;

should read:

wxZipInputStream in(wxT("test.zip"), wxT("text.txt"));
wxTextInputStream txt(in);
wxString data;
txt >> data;

Error on P. 434 Reported 2007-02-01

On the last line, the web site address www.poedit.org should be www.poedit.net.

Error on P. 441 Reported 2007-12-11

Three lines before the heading “Converting Outside of a Temporary Buffer”, replace wxMBConvUFT16/32 with wxMBConvUTF16/32 (swap the F and the T).

Error on P. 501 Reported 2006-09-29

In the first sentence, “to create a document explicitly in your document” should read “to create a document explicitly in your application”.

Error on P. 537

In the first paragraph, “16x6” should read “16x16”.

Error on P. 539

On the second line, “use wxID_HELP, wxID_PREFERENCES, and wxID_HELP” should read use “wxID_ABOUT, wxID_PREFERENCES, and wxID_EXIT”.

Error on P. 634 Reported 2007-05-08

On around the 11th line, event.Enable(false) should have a semicolon after it.

Error on P. 680, 681

References to MDI should also point to page 63 as well as page 413.

Error on P. 694

wxGrid is referenced as 345-346. It should be 346-347, so “345-346,348” should be merged to “346-348”. Also, “classes, 347-348” should move to 348-349, and “code listings, 346-347” should move to 347-348.