Get color from windows color dialog?

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CheatCat

17

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Joined: 7th Mar 2007

Location: Sweden

Posted: 6th Nov 2008 14:36 Edited at: 11th Nov 2008 10:45

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I cannot save the color I get from the color dialog! What is wrong?

+ Code Snippet

#include <DarkGDK.h>
#include "Windows.h"

CHOOSECOLOR cc;                 // common dialog box structure 
static COLORREF acrCustClr[16]; // array of custom colors 
HBRUSH hbrush;                  // brush handle
static DWORD rgbCurrent;        // initial color selection

DWORD SelectColor()
{
	// Initialize CHOOSECOLOR 
	ZeroMemory(&cc, sizeof(cc));
	cc.lStructSize = sizeof(cc);
	cc.hwndOwner = NULL;
	cc.lpCustColors = (LPDWORD) acrCustClr;
	cc.rgbResult = rgbCurrent;
	cc.Flags = CC_FULLOPEN | CC_RGBINIT;
	 
	if (ChooseColor(&cc)==TRUE) 
	{
		hbrush = CreateSolidBrush(cc.rgbResult);
		rgbCurrent = cc.rgbResult; 
	}
	return rgbCurrent;
}

void DarkGDK()
{
	dbSyncOn();
	dbInk(dbRGB(255, 255, 255), 0);

	DWORD color = SelectColor();
	char* text;

	while(LoopGDK())
	{
		text = (char*)color;
		dbText(0, 0, text);
		dbSync();
	}
}

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Benjamin

22

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Joined: 24th Nov 2002

Location: France

Posted: 6th Nov 2008 21:05 Edited at: 6th Nov 2008 21:05

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I don't know, maybe the fact that you're treating 'color' as if it contains the address of a string. If you want to output the value of it, you do this:

+ Code Snippet

char buffer[16];
sprintf(buffer, "%d", color);
dbText(0, 0, buffer);

There may be something else wrong but I don't really have the time or patience to check right now, besides I'm not using windows anyway so I wouldn't be able to compile it.

Multisync - TCP Server/Client Multiplayer Plugin (DBP/DBCe)

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Zuka

16

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Joined: 21st Apr 2008

Location: They locked me in the insane asylum.

Posted: 6th Nov 2008 22:39

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"color" is a DWORD, not a char* and cannot be cast to a char*. Use itoa.

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CheatCat

17

Years of Service

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Joined: 7th Mar 2007

Location: Sweden

Posted: 11th Nov 2008 11:13 Edited at: 11th Nov 2008 11:14

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I only get errors when I try:
itoa(color, text, 10);

But I can convert the DWORD value into float! But the text change color into black instead of the chosen color when I press the Return Key:

+ Code Snippet

#include <DarkGDK.h>
#include "Windows.h"

CHOOSECOLOR cc;                 // common dialog box structure 
static COLORREF acrCustClr[16]; // array of custom colors 
HBRUSH hbrush;                  // brush handle
static DWORD rgbCurrent;        // initial color selection

DWORD SelectColor()
{
	// Initialize CHOOSECOLOR 
	ZeroMemory(&cc, sizeof(cc));
	cc.lStructSize = sizeof(cc);
	cc.hwndOwner = NULL;
	cc.lpCustColors = (LPDWORD) acrCustClr;
	cc.rgbResult = rgbCurrent;
	cc.Flags = CC_FULLOPEN | CC_RGBINIT;
	 
	if (ChooseColor(&cc)==TRUE) 
	{
		hbrush = CreateSolidBrush(cc.rgbResult);
		rgbCurrent = cc.rgbResult; 
	}
	return rgbCurrent;
}

void DarkGDK()
{
	dbSyncOn();
	dbInk(dbRGB(255, 255, 255), 0);

	DWORD color = SelectColor();

	while(LoopGDK())
	{
		if(dbReturnKey() == 1)
		{
			dbInk(color, 0);
                        dbCLS();
		}

		dbText(0, 0, dbStr((float)color));
		dbSync();
	}
}

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Dark GDK / Get color from windows color dialog?