Sebastian G|nther wrote

BTW, I hope you all know that X normally only supports bitmaps (=pixmaps with depth 2) and pixmaps with the same colour depth as the current screen uses. You can NOT create pixmaps with an arbitrary colour depth on X!

Yes, we (at least I) already found out as you might recall the problems a while ago in running Lazarus at other screendepths than 8 bpp ;-)

(this is only supported by a few X servers and perhaps by XFree86 4.0); let's see how you want to create a VCL compatible TBitmap class... :-)

We'll see ;-)

Marc

I attempted to add a function to TBitmap called LoadFromXPMFile to see if I could load an XPM file and use the Speedbutton's canvas to draw it to the button. I failed.. :-(

Can someone look at the code in gtkobject and tell me what the problem is? I am getting a gtk error when I try to load the XPM saying that the assert width != 0 and height !=0 failed. Why are they zero?!!!

Shane

Marc Weustink wrote

Yesterday I was struggeling with this also. Somehow it returned a null pixmap.

BTW, I hope you all know that X normally only supports bitmaps (=pixmaps with depth 2) and pixmaps with the same colour depth as the current screen uses. You can NOT create pixmaps with an arbitrary colour depth on X! (this is only supported by a few X servers and perhaps by XFree86 4.0); let's see how you want to create a VCL compatible TBitmap class... :-)

- Sebastian

+ From: Shane Miller

+ I attempted to add a function to TBitmap called
+ LoadFromXPMFile to see if I could load an XPM file and use
+ the Speedbutton's canvas to draw it to the button. I failed.. :-( +
+ Can someone look at the code in gtkobject and tell me what
+ the problem is? I am getting a gtk error when I try to load
+ the XPM saying that the assert width != 0 and height !=0
+ failed. Why are they zero?!!!

Yesterday I was struggeling with this also. Somehow it returned a null pixmap.
Finally I got something but is to alpha to commit. I didn't use a LoadFromXPMFile but created a new component TPixmap = class(TBitmap). This way we can use TBitmap for .bmp and TPixmap for .xpm and both can load through streams (etc)
More tonight.

Marc