internet explorer - Deciphering HEX RGBA for MS-filters in CSS -

-

i'm writing styles page i'd use rgba colors on background of list items. i've used css background property along rgba(146,138,118,.4) define transparent background color.

now i'm trying cover bases ie support using technique of ms-filter described in this article. (see heading "...and rgba all.")

the trouble apparently ms-filter requires use type of hybrid between rgba , hex alpha transparency value translated number between 00 , ff. see this description page microsoft reference.

so trouble can't figure out how on earth convert value rgba hex/rgba hybrid method. can point me reference material on this? please don't give me correct value - me no outside of color. need understand how behind it, thanks.

translating rgba alpha gradient filter format simple. it's mapping interval [0, 1] interval [0, 255], represented in hex. conversion, then, multiply 255 , convert hex. example, opacity in rgba(rr, gg, bb, 0.5) ends 7f (or 80, if you're rounding up):

0.5 * 255 = 127.5 (base 10) 127 (base 10) = 7f (base 16)

i assume you're not asking how convert between base 10 , base 16.


Comments

Post a Comment

Popular posts from this blog

C#: Application without a window or taskbar item (background app) that can still use Console.WriteLine() -

-
i'm trying create application adheres following: no taskbar no console or form window can utilize console.writeline() . (i.e. if executes app command prompt write console.) the problem if create windows form (or wpf) application can have there no taskbar, console or window show up, console.writeline() nothing. if create console app, writes console, can't figure out how hide (and if did hide it, write command prompt window?)... how do this? just create standard console application. callers responsibility hide window caused program (from how run c# console application console hidden ): system.diagnostics.processstartinfo start = new system.diagnostics.processstartinfo(); start.filename = dir + @"\myprocesstostart.exe"; start.windowstyle = system.diagnostics.processwindowstyle.hidden;
Read more

c++ - Convert big endian to little endian when reading from a binary file -

-
this question has answer here: how convert between big-endian , little-endian values in c++? 28 answers i've been looking around how convert big-endian little-endians. didn't find solve problem. seem there's many way can conversion. anyway following code works ok in big-endian system. how should write conversion function work on little-endian system well? this homework, since systems @ school running big-endian system. it's got curious , wanted make work on home computer also #include <iostream> #include <fstream> using namespace std; int main() { ifstream file; file.open("file.bin", ios::in | ios::binary); if(!file) cerr << "not able read" << endl; else { cout << "opened" << endl; int i_var; double d_var; while(!file.eof()) {...
Read more

Lotus Notes: RichText Item -

-
okay, here's deal. using c# domino api. have rich text data want insert lotus notes rich text field. notesdocument.replaceitemvalue inserts text no formatting. notesdocument.createrichtextitem gives me notesrichtextitem object can use manually creating richtext (methods addnewline() addpagebreak() etc). not have kind of parse method formatted rich text data, need. want users put whatever want in there - using aforementioned methods useless me. the notesrichtextitem.values object throws error when try add rich text formatted string. so now, do? guess i'm pretty screwed here, hoping genius come solution. appreciated. thanks guys! ps - inserting notes rich text data or html data fine. either 1 long displays proper rich text in document , not unformatted string. well, found answer - it's not pretty, works! did was use dxl exporter grab xml edit (adding rich text) , then delete original document use dxl importer import edited document voila! :-...
Read more