Does anyone know how to control the size and colors of custom icons?
I put a back button in my custom menu and I wanted it to have the same icon as the next-page button, only with the arrow pointing to the left. So, I made a screen dump, copied the icon, flipped it horizontally, and expected this to work. Little did I know...
First, I had to figure out that pure red (R=255, G=0, B=0) is interpreted as transparent. And then it turned out that the icon gets stretched and the colors messed up. (See attachment.)
Some sources claim that the image has to be 80x50 px, but that's not true. At a certain size the image won't be accepted anymore, but I haven't been able to establish the exact size. Also, it's claimed that *.bmp's have to be 8-bit -- again, that's not so: the icons of Calculator, MenuTT, TomTomInfo etc. are all 24-bit.
In one case I checked, the icon's original bmp-file is 63x44 and in the screen dump this gets stretched to 92x62. As you can see in the attached jpg, the color gradient of the next-page arrow gets messed up, obviously due to a color reduction.
Any ideas as to what is going on here and what to do about it?
I put a back button in my custom menu and I wanted it to have the same icon as the next-page button, only with the arrow pointing to the left. So, I made a screen dump, copied the icon, flipped it horizontally, and expected this to work. Little did I know...
First, I had to figure out that pure red (R=255, G=0, B=0) is interpreted as transparent. And then it turned out that the icon gets stretched and the colors messed up. (See attachment.)
Some sources claim that the image has to be 80x50 px, but that's not true. At a certain size the image won't be accepted anymore, but I haven't been able to establish the exact size. Also, it's claimed that *.bmp's have to be 8-bit -- again, that's not so: the icons of Calculator, MenuTT, TomTomInfo etc. are all 24-bit.
In one case I checked, the icon's original bmp-file is 63x44 and in the screen dump this gets stretched to 92x62. As you can see in the attached jpg, the color gradient of the next-page arrow gets messed up, obviously due to a color reduction.
Any ideas as to what is going on here and what to do about it?