swt

I would like to ask the same thing than this question but using SWT: Is there a way to make a Button with your own button graphic not just with an image inside the button? If not is another way to create a custom button in java? public class ImageButton extends Canvas { private int mouse = 0; private boolean hit = false; public ImageButton(Composite parent, int style) { super(parent, style); this.addPaintListener(new PaintListener() { public void paintControl(PaintEvent e) { switch (mouse) { case 0: // Default state e.gc.drawString("Normal", 5, 5); break; case 1: // Mouse over e.gc.drawString(

I understand to draw on a Composite, you can add a paint listener, but that results in drawing under the children. What if I want to draw over the top of children? The following draws a line, but subc is drawn over it. Composite c = new Composite(shell, 0); c.setBackground(shell.getDisplay().getSystemColor(SWT.COLOR_BLUE)); c.setBounds(100, 100, 800, 600); c.addPaintListener(new PaintListener() { public void paintControl(PaintEvent e) { e.gc.drawLine(0, 0, 500, 1000); } }); final Composite subc = new Composite(c, 0); subc.setLayout(null); subc.setBounds(10, 10, 600, 400); Daniel Leschkowski

I'm using SWT (and Eclipse RCP) to render a table. My problem is that if I change the background of a cell (a ViewerCell in fact) I can see that it has the new color. My problem is that if I select a row in my Table or if I hover over the row containing my cell in question then the selection/hover background overrides my cell color. How can I override this? Problem solved with StyledCellLabelProvider. Tell me if you want to see some code. Edit: We use it do display validation errors so ignore the validation stuff here: public class ValidationCellLabelProvider extends StyledCellLabelProvider {

How do I create an in-memory fully transparent SWT image and draw a black line on it with antialias enabled? I expect the result to include only black color and alpha values ranging from 0 to 255 due to antialias... I googled and tried everything that I could... is this possible at all? This is how I did and it works: Image src = new Image(null, 16, 16); ImageData imageData = src.getImageData(); imageData.transparentPixel = imageData.getPixel(0, 0); src.dispose(); Image icon = new Image(null, imageData); //draw on the icon with gc I was able to make this work, although it feels a bit hacky:

Qt solution is a single call to resizeColumnsToContent() , in .NET one can use TextRenderer.MeasureText() , JTable could use AUTO_RESIZE_ALL_COLUMNS . In SWT, is there a way to programmaticaly resize columns after populating them? Calling computeSize(SWT.DEFAULT, SWT.DEFAULT) returns the same value thus disregarding character left overs in columns. TableColumn has setWidth() , but how do I obtain the size hint for the current content taking into account font face, etc? In many cases, the table entries change at run-time to reflect changes in the data model. Adding entry to the data model