RBG in windows.h

[foobarbaz]

Hello hackers,

I have a problem compiling this example, the compiler says that RBG identifier not found(redBlueGreen?) I saw something similiar in a different library that allowed you to create your own mix of colors. Could it be some kind of setting in properties? Or better yet is there a different function to do the same thing?

thanks in advance for your help.

line where error occurs:
COLORREF c = RBG(rand() % 256, rand() % 256, rand() % 256);

/**
	Beginning Game Programming, Third Edition
	Chapter 2
	WindowTest program
**/

#include <windows.h>
#include <iostream>

using namespace std;

const string ProgramTitle = "Hello Windows";

/**
**The window event callback function
**/
LRESULT CALLBACK WinProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	string text = "HelloWindows!";

	switch(message)
	{
	case WM_PAINT:
		{
			//get the demensions of the window
			RECT rt;
			GetClientRect(hWnd, &rt);

			//start drawing on device context
			PAINTSTRUCT ps;
			HDC hdc = BeginPaint(hWnd, &ps);

			//draw some text
			DrawText(hdc, text.c_str(), text.length(), &rt, DT_CENTER);

			//draw 1000 random pixels
			for(int n = 0; n < 3000; n++)
			{
				int x = rand() % (rt.right - rt.left);
				int y = rand() % (rt.bottom - rt.top);
				COLORREF c = RBG(rand() % 256, rand() % 256, rand() % 256);
				SetPixel(hdc, x, y, c);
			}

			//stop drawing
			EndPaint(hWnd, &ps);
		}
		break;

	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	}
	return DefWindowProc(hWnd, message, wParam, lParam);
}

/**
** Helper function to set up the window properties
**/
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	//set the new window's properties
	WNDCLASSEX wc;
	wc.cbSize = sizeof(WNDCLASSEX);
	wc.style			= CS_HREDRAW | CS_VREDRAW;
	wc.lpfnWndProc		= (WNDPROC)WinProc;
	wc.cbClsExtra		= 0;
	wc.cbWndExtra		= 0;
	wc.hInstance		= hInstance;
	wc.hIcon			= NULL;
	wc.hCursor			= LoadCursor(NULL, IDC_ARROW);
	wc.hbrBackground	= (HBRUSH)GetStockObject(WHITE_BRUSH);
	wc.lpszMenuName		= NULL;
	wc.lpszClassName	= ProgramTitle.c_str();
	wc.hIconSm			= NULL;
	return RegisterClassEx(&wc);
}

/**
**Helper function to create the window and refresh it
**/
bool InitInstance(HINSTANCE hInstance, int nCmdShow)
{
	//create a new window
	HWND hWnd = CreateWindow(
		ProgramTitle.c_str(),			//window class
		ProgramTitle.c_str(),			//title bar
		WS_OVERLAPPEDWINDOW,			//window style
		CW_USEDEFAULT, CW_USEDEFAULT,	//position of window
		640, 480,						//demensions of the window
		NULL,							//parent window(not used)
		NULL,							//menu(not used)
		hInstance,						//application instance
		NULL);							//windows parameters(not used)

	//was there an error creating the window?
	if(hWnd == 0) return 0;

	//display the window
	ShowWindow(hWnd, nCmdShow);
	UpdateWindow(hWnd);

	return 1;
}

/**
**Entry point for a Windows program
**/
int WINAPI WinMain(HINSTANCE hInstance,
				   HINSTANCE hPrevInstance,
				   LPSTR lpCmdLine,
				   int nCmdShow)
{
	//create the window
	MyRegisterClass(hInstance);
	if(!InitInstance(hInstance, nCmdShow)) return 0;

	//main message loop
	MSG msg;
	while(GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return msg.wParam;
}

[guestgulkan]

RGB

[foobarbaz]

thanks I was searching the MSDN like crazy and I actually found the function COLORREF, which is rare for me to find it in the MSDN.

http://msdn.microsoft.com/en-us/library/dd183449(VS.85).aspx

[hkr88]

your code saying RBG...change it to RGB and put below code where you define and include stuff. it should work

#define RGB(r,g,b) ( ((DWORD)(BYTE)r)|((DWORD)((BYTE)g)<<8)|((DWORD)((BYTE)b)<<16) )
#define GetRValue(RGBColor) (BYTE) (RGBColor)
#define GetGValue(RGBColor) (BYTE) (((DWORD)RGBColor) >> 8)
#define GetBValue(RGBColor) (BYTE) (((DWORD)RGBColor) >> 16)