TextLayout.d:2915 causes EXCEPTION_ACCESS_VIOLATION ?
yidabu
yidabu.spam at gmail.com
Sat Aug 9 03:19:20 PDT 2008
Environment: dwt-win svn.
I porting styledtext.Snippet212, cause runtime exception:
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at ntdll.dll (0x7c90316c) thread(1480)
->us
#0 ?? () at dwt\graphics\TextLayout.d:2915 from ntdll.dll
#1 0x77f205bf in ?? () at dwt\graphics\TextLayout.d:2915 from GDI32.dll
#2 0x00483c72 in dwt.graphics.TextLayout.TextLayout.shape () at dwt\graphics\TextLayout.d:2915
#3 0x0047bfff in dwt.graphics.TextLayout.TextLayout.computeRuns () at dwt\graphics\TextLayout.d:267
#4 0x00480474 in dwt.graphics.Rectangle.Rectangle dwt.graphics.TextLayout.TextLayout.getBounds () at dwt\graphics\TextLayout.d:1387
#5 0x00411ea7 in dwt.graphics.Point.Point dwt.custom.StyledText.StyledText.computeSize () at dwt\custom\StyledText.d:1784
#6 0x0041f24b in dwt.layout.GridData.GridData.computeSize () at dwt\layout\GridData.d:484
#7 0x0043258f in dwt.graphics.Point.Point dwt.layout.GridLayout.GridLayout.layout () at dwt\layout\GridLayout.d:232
#8 0x00432325 in dwt.layout.GridLayout.GridLayout.layout () at dwt\layout\GridLayout.d:208
#9 0x004999af in dwt.widgets.Composite.Composite.updateLayout () at dwt\widgets\Composite.d:1170
#10 0x00498eba in dwt.widgets.Composite.Composite.sendResize () at dwt\widgets\Composite.d:879
#11 0x00499053 in dwt.widgets.Composite.Composite.setBounds () at dwt\widgets\Composite.d:924
#12 0x004d959d in dwt.widgets.Decorations.Decorations.setBounds () at dwt\widgets\Decorations.d:888
#13 0x0042f9a2 in dwt.widgets.Shell.Shell.setBounds () at dwt\widgets\Shell.d:1460
#14 0x004733f3 in dwt.widgets.Control.Control.setBounds () at dwt\widgets\Control.d:2639
#15 0x00473d27 in dwt.widgets.Control.Control.setSize () at dwt\widgets\Control.d:3153
#16 0x004042c8 in _Dmain () at Snippet212.d:171
#17 0x00645778 in extern (C) int dmain2.main(int, char**) . void runMain(void*) () from dmain2
#18 0x006457af in extern (C) int dmain2.main(int, char**) . void runAll(void*) () from dmain2
#19 0x006454f0 in _main () from dmain2
#20 0x0065f801 in _mainCRTStartup () from constart
#21 0x7c816fd7 in ?? () from KERNEL32.dll
Code:
/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Port to the D programming language:
* yidabu at gmail dot com ( D China http://www.d-programming-language-china.org/ )
*******************************************************************************/
/*
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at ntdll.dll (0x7c90316c) thread(1480)
->us
#0 ?? () at dwt\graphics\TextLayout.d:2915 from ntdll.dll
#1 0x77f205bf in ?? () at dwt\graphics\TextLayout.d:2915 from GDI32.dll
#2 0x00483c72 in dwt.graphics.TextLayout.TextLayout.shape () at dwt\graphics\TextLayout.d:2915
#3 0x0047bfff in dwt.graphics.TextLayout.TextLayout.computeRuns () at dwt\graphics\TextLayout.d:267
#4 0x00480474 in dwt.graphics.Rectangle.Rectangle dwt.graphics.TextLayout.TextLayout.getBounds () at dwt\graphics\TextLayout.d:1387
#5 0x00411ea7 in dwt.graphics.Point.Point dwt.custom.StyledText.StyledText.computeSize () at dwt\custom\StyledText.d:1784
#6 0x0041f24b in dwt.layout.GridData.GridData.computeSize () at dwt\layout\GridData.d:484
#7 0x0043258f in dwt.graphics.Point.Point dwt.layout.GridLayout.GridLayout.layout () at dwt\layout\GridLayout.d:232
#8 0x00432325 in dwt.layout.GridLayout.GridLayout.layout () at dwt\layout\GridLayout.d:208
#9 0x004999af in dwt.widgets.Composite.Composite.updateLayout () at dwt\widgets\Composite.d:1170
#10 0x00498eba in dwt.widgets.Composite.Composite.sendResize () at dwt\widgets\Composite.d:879
#11 0x00499053 in dwt.widgets.Composite.Composite.setBounds () at dwt\widgets\Composite.d:924
#12 0x004d959d in dwt.widgets.Decorations.Decorations.setBounds () at dwt\widgets\Decorations.d:888
#13 0x0042f9a2 in dwt.widgets.Shell.Shell.setBounds () at dwt\widgets\Shell.d:1460
#14 0x004733f3 in dwt.widgets.Control.Control.setBounds () at dwt\widgets\Control.d:2639
#15 0x00473d27 in dwt.widgets.Control.Control.setSize () at dwt\widgets\Control.d:3153
#16 0x004042c8 in _Dmain () at Snippet212.d:171
#17 0x00645778 in extern (C) int dmain2.main(int, char**) . void runMain(void*) () from dmain2
#18 0x006457af in extern (C) int dmain2.main(int, char**) . void runAll(void*) () from dmain2
#19 0x006454f0 in _main () from dmain2
#20 0x0065f801 in _mainCRTStartup () from constart
#21 0x7c816fd7 in ?? () from KERNEL32.dll
*/
module styledtext.Snippet212;
/**
* StyledText snippet: embed images
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.2
*/
import dwt.DWT;
import dwt.custom.StyledText;
import dwt.custom.StyleRange;
import dwt.layout.GridLayout;
import dwt.layout.GridData;
import dwt.widgets.Display;
import dwt.widgets.Shell;
import dwt.widgets.Button;
import dwt.widgets.FileDialog;
import dwt.widgets.Event;
import dwt.widgets.Listener;
import dwt.custom.PaintObjectEvent;
import dwt.custom.PaintObjectListener;
import dwt.events.VerifyEvent;
import dwt.events.VerifyListener;
import dwt.graphics.FontData;
import dwt.graphics.Font;
import dwt.graphics.Rectangle;
import dwt.graphics.GC;
import dwt.graphics.Image;
import dwt.graphics.GlyphMetrics;
import dwt.dwthelper.utils;
import dwt.dwthelper.System;
void main() {
static StyledText styledText;
static String text =
"This snippet shows how to embed images in a StyledText.\n"
"Here is one: \uFFFC, and here is another: \uFFFC."
"Use the add button to add an image from your filesystem to the StyledText at the current caret offset.";
static Image[] images;
static int[] offsets;
static void addImage(Image image, int offset) {
StyleRange style = new StyleRange ();
style.start = offset;
style.length = 1;
Rectangle rect = image.getBounds();
style.metrics = new GlyphMetrics(rect.height, 0, rect.width);
styledText.setStyleRange(style);
}
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new GridLayout());
styledText = new StyledText(shell, DWT.WRAP | DWT.BORDER);
styledText.setLayoutData(new GridData(DWT.FILL, DWT.FILL, true, true));
styledText.setText(text);
images = [
display.getSystemImage(DWT.ICON_QUESTION),
display.getSystemImage(DWT.ICON_INFORMATION)
];
offsets = new int[images.length];
int lastOffset = 0;
for (int i = 0; i < images.length; i++) {
int offset = text.indexOf("\uFFFC", lastOffset);
offsets[i] = offset;
addImage(images[i], offset);
lastOffset = offset + 1;
}
void onVerify(Event e) {
int start = e.start;
int replaceCharCount = e.end - e.start;
int newCharCount = e.text.length;
for (int i = 0; i < offsets.length; i++) {
int offset = offsets[i];
if (start <= offset && offset < start + replaceCharCount) {
// this image is being deleted from the text
if (images[i] !is null && !images[i].isDisposed()) {
images[i].dispose();
images[i] = null;
}
offset = -1;
}
if (offset != -1 && offset >= start) offset += newCharCount - replaceCharCount;
offsets[i] = offset;
}
}
// use a verify listener to keep the offsets up to date
styledText.addListener(DWT.Verify, dgListener(&onVerify));
styledText.addPaintObjectListener(new class(images, offsets) PaintObjectListener {
Image[] images;
int[] offsets;
this( Image[] images_, int[] offsets_) {
this.images = images_;
this.offsets = offsets_;
}
public void paintObject(PaintObjectEvent event) {
GC gc = event.gc;
StyleRange style = event.style;
int start = style.start;
for (int i = 0; i < offsets.length; i++) {
int offset = offsets[i];
if (start == offset) {
Image image = images[i];
int x = event.x;
int y = event.y + event.ascent - style.metrics.ascent;
gc.drawImage(image, x, y);
}
}
}
});
Button button = new Button (shell, DWT.PUSH);
button.setText("Add Image");
button.setLayoutData(new GridData(DWT.CENTER, DWT.CENTER, false, false));
void onSelection(Event e)
{
FileDialog dialog = new FileDialog(shell);
String filename = dialog.open();
if (filename !is null) {
try {
Image image = new Image(display, filename);
int offset = styledText.getCaretOffset();
styledText.replaceTextRange(offset, 0, "\uFFFC");
int index = 0;
while (index < offsets.length) {
if (offsets[index] == -1 && images[index] is null) break;
index++;
}
if (index == offsets.length) {
int[] tmpOffsets = new int[index + 1];
System.arraycopy(offsets, 0, tmpOffsets, 0, offsets.length);
offsets = tmpOffsets;
Image[] tmpImages = new Image[index + 1];
System.arraycopy(images, 0, tmpImages, 0, images.length);
images = tmpImages;
}
offsets[index] = offset;
images[index] = image;
addImage(image, offset);
} catch (Exception e) {
ExceptionPrintStackTrace(e);
}
}
}
button.addListener(DWT.Selection, dgListener(&onSelection));
shell.setSize(400, 400);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
for (int i = 0; i < images.length; i++) {
Image image = images[i];
if (image !is null && !image.isDisposed()) {
image.dispose();
}
}
display.dispose();
}
--
yidabu <yidabu.spam at gmail.com>
http://www.dsource.org/projects/dwin
D 语言-中文(D Chinese):
http://www.d-programming-language-china.org/
http://bbs.d-programming-language-china.org/
http://dwin.d-programming-language-china.org/
http://scite4d.d-programming-language-china.org/
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