Thread: colours!!!!

Originally posted by eAgle
How can my program automatically colour a word???? For example, when I write the word "help", that word should be coloured with red! How can I do that?????

thanx and sorry, my english is bad!!!!

It depends.....

Is your application a fullblown GUI windows program or is it console based?

From MSDN

Code:

SetTextColor
The SetTextColor function sets the text color for the 
specified device context to the specified color. 

COLORREF SetTextColor(
  HDC hdc,           // handle to device context
  COLORREF crColor   // text color
);
 
Parameters
hdc 
Handle to the device context. 
crColor 
Specifies the color of the text. 
Return Values
If the function succeeds, the return value is a 
color reference for the previous text color.

If the function fails, the return value is CLR_INVALID. 

Windows NT: To get extended error information, 
callGetLastError. 

Remarks
The text color is used to draw the face of each character 
written by the TextOut and ExtTextOut functions. The text 
color is also used in converting bitmaps from color to monochrome and vice versa.

As I am bored.......

Here's a brief example;

Code:

#include <windows.h>
#include "resource.h"

LRESULT CALLBACK WindowProc(HWND, UINT, WPARAM, LPARAM);

char szClassName[] = "WindowsApp";
HINSTANCE g_hInst;


int WINAPI WinMain(HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpszArgument, int nFunsterStil)

{
    HWND hwnd;               
	MSG messages;            
	WNDCLASSEX wincl; 
	
	g_hInst = hThisInstance;

    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProc;      
    wincl.style = CS_DBLCLKS;               
    wincl.cbSize = sizeof(WNDCLASSEX);
    wincl.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor(NULL, IDC_ARROW);
    wincl.lpszMenuName = MAKEINTRESOURCE(IDR_MENU1);
    wincl.cbClsExtra = 0; 
    wincl.cbWndExtra = 0; 
	wincl.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);

    
    if(!RegisterClassEx(&wincl)) return 0;

   
    hwnd = CreateWindowEx(0,szClassName, "Windows App",
		WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,
		CW_USEDEFAULT,CW_USEDEFAULT, HWND_DESKTOP,NULL,            
           hThisInstance,NULL );    

   
   ShowWindow(hwnd, nFunsterStil);
	UpdateWindow(hwnd);
   
    while(GetMessage(&messages, NULL, 0, 0))
    {
          TranslateMessage(&messages);
          DispatchMessage(&messages);
    }

    return messages.wParam;
}


LRESULT CALLBACK WindowProc(HWND hwnd, UINT message, 
							WPARAM wParam, LPARAM lParam)
{

	HDC hdc; //handle to device context
	static enum {RED = 0,GREEN,BLUE};//enumerate possible colours
	static int nCol = 0;//Active colour
	COLORREF col;//RGB colour to use
	PAINTSTRUCT ps;//Paint structure
	

    switch (message)                
    {
           case WM_COMMAND:
			   switch(LOWORD(wParam)){//What col was selected in menu
			   case ID_COLOUR_GREEN:
				   nCol = GREEN;
				   break;
			   case ID_COLOUR_BLUE:
				   nCol = BLUE;
				   break;
			   case ID_COLOUR_RED:
				   nCol = RED;
				   break;
			   }  
		   InvalidateRect(hwnd,NULL,TRUE);//Make window repaint itself
           break;
           
           case WM_PAINT:
			   switch(nCol){//What is the active colour
			   case BLUE:
				   col = RGB(0,0,255);
				   break;
			   case GREEN:
				   col = RGB(0,255,0);
				   break;
			   case RED:
				   col = RGB(255,0,0);
				   break;
			   }

			   hdc = BeginPaint(hwnd, &ps);//Get DC and remove paint message
			   SetTextColor(hdc,col);//Set the colour of test
			   
			   TextOut(hdc,100,100,"Hello World - in colour",23);//Some text to write
			   EndPaint(hwnd,&ps);//Clear DC
			             
           break;
           
           case WM_DESTROY:
           PostQuitMessage(0);        
           break;
           default:                   
           return DefWindowProc(hwnd, message, wParam, lParam);
    }
    return 0;
}

Here's an app that paints some txt on its window.....you click down the menu and you can change the colour

I have enclosed the project files in case you want to run the program - they work on VC++

Doh...here are the files