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How to get the number of colors of a bitmap. Turn on/off line numbers in source code. Switch to Orginial background IDE or DSP color Comment or reply to this aritlce/tip for discussion. Bookmark this article to my favorite article(s). Print this article
Get the number of colors in a bitmap 13-May-04
Category
Graphic
Language
CBuilder All Versions
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Publisher:
Darley, F. Joe
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			1   
2   //---------------------------------------------------------------------------
3   
4   #include <vcl.h>
5   #include <Graphics.hpp>
6   #pragma hdrstop
7   
8   #include "Unit1.h"
9   //---------------------------------------------------------------------------
10  #pragma package(smart_init)
11  #pragma resource "*.dfm"
12  TForm1 *Form1;
13  //---------------------------------------------------------------------------
14  __fastcall TForm1::TForm1(TComponent* Owner)
15          : TForm(Owner)
16  {
17  }
18  //---------------------------------------------------------------------------
19  
20  void __fastcall TForm1::Button1Click(TObject *Sender)
21  {
22  AnsiString pf;
23  
24    switch(Image1->Picture->Bitmap->PixelFormat) {
25  case
26      pf1bit: pf = ".  Monochrome";
27  case
28      pf4bit: pf = ".  16 Colors";
29  case
30      pf8bit: pf = ".  256 Colors";
31  case
32      pf15bit: pf = ".  32768 Colors";
33  case
34      pf16bit: pf = ".  65536 Colors";
35  case
36      pf24bit: pf = ".  16 Million Colors";
37  case
38      pf32bit: pf = ".  4.2 Billon of Colors!";
39  default :
40        pf = ".  Custom color scheme";
41  }
42  ShowMessage(pf);
43  }
44  //---------------------------------------------------------------------------


			
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