ltk-user August 2006

ltk-user@common-lisp.net

3 participants
4 discussions

[ltk-user] Images
by Bill Ramsay 23 Aug '06

23 Aug '06

Hello, again After much confusion on my part, I am finally able to get images to work. Felip's latest code snippet works fine and I am able to use the same method in my own code. For some reason or other my old ppm images don't work. I think it has something to do with transparency, because if I make a new transparent image, it works. Anyway, that's a different problem. Thank you for all the help. Sorry it took so long to get me going.... Bill

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[ltk-user] Icons
by Bill Ramsay 20 Aug '06

20 Aug '06

I'm trying to add an image or icon to a menubutton (or regular button) and I don't quite get how it works. What does the first parameter of image-load represent (i.e. photo as in (image-load photo "x.ppm"))? Should I be working with bitmaps instead of images? How does the result of the load get assigned to the widget? And how does the :anchor or :justify get placed on the icon as opposed to the button text or the button itself? Is there an example of this anywhere? Thanks, Bill

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[ltk-user] Apparent Bug
by Bill Ramsay 17 Aug '06

17 Aug '06

I seem to have found a bug in Ltk. If you set the genomety of the main window to x/y values of 0/0, the menus no longer work correctly. Firing the menu command button causes the menu to appear in a flash and fire the first menu item. You do not get to view the menu at all, let alone traverse it. Setting the geometry to 1/1 (or anything else) solves the problem. I seem to have a lot of questions getting started with Ltk. Sorry, but... How do you create a modal dialog box? I can do it by creating a toplevel window and positioning it where the dialog should go, but this solution is not modal. Do you have to use tk itself to do this, or is there something I'm missing in ltk.lisp. Thanks, Bill

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[ltk-user] Grid question
by Bill 15 Aug '06

15 Aug '06

Hi, I'm new to Ltk. I seem to get it to work fine and have seen enough to want to really get familiar with it. However, I have a few questions about the layout managers. Basically, I want to be able to place things anywhere on the screen and have them stay relative to one another when the screen is resized. When creating a grid, who owns it? If I want a frame to be a grid of four by four and to place buttons at 1,0 and 2,3, how is that done? It seems that when I try this the first button goes to 0,0 and the second button to 1,1. Also, how do you create an empty frame of a specific size? Or a nil (*tk*) window of a specific size? And, lastly, are there any more complex examples I can look at? Thanks, Bill

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ltk-user August 2006