COULEURS ET TRANSPARENCE DES CONTROLES (API)

#include <windows.h>

/******************************************************************/
/*************     Fonction de dessin des boutons     *************/
/******************************************************************/
void DessinerBouton(LPDRAWITEMSTRUCT lpds,LPCTSTR texte,COLORREF couleurtexte,COLORREF couleurfond)
{
	//Déclarations:
	SIZE dims;
	char nom[50];
	//Définir le texte du bouton:
	strcpy(nom, texte);
	//Déterminer les dimensions du texte:
    GetTextExtentPoint32(lpds->hDC, nom, strlen(nom), &dims);
	//Définir la couleur du texte:
    SetTextColor(lpds->hDC, couleurtexte);
	//Définir la couleur du fond:
    SetBkColor(lpds->hDC, couleurfond);
	//Déterminer l'état du bouton:
	BOOL etat=lpds->itemState & ODS_SELECTED;
	//Déterminer la largeur et la hauteur du bouton:
	int largeur=lpds->rcItem.right-lpds->rcItem.left;
	int hauteur=lpds->rcItem.bottom-lpds->rcItem.top;
	//Ecrire le texte sur le bouton:
    ExtTextOut(lpds->hDC,(largeur-dims.cx)/2+etat, (hauteur-dims.cy)/2+etat, ETO_OPAQUE | ETO_CLIPPED, &lpds->rcItem, nom, strlen(nom), NULL);
    //Dessiner le cadre du bouton selon son état:
	DrawEdge(lpds->hDC, &lpds->rcItem,(etat ? EDGE_SUNKEN : EDGE_RAISED ), BF_RECT);                
	//Retour:
	return;
}
/******************************************************************/

/******************************************************************/
/**************   Procédure de la boite de dialogue     ***********/					
/******************************************************************/
BOOL CALLBACK DialogProc(  HWND hDlg, UINT message, WPARAM wParam,LPARAM lParam  )
{
	//Déclarer et définir les couleurs de fond de certains contrôles:
	static HBRUSH hbDialog = CreateSolidBrush(RGB(200,175,100));
	static HBRUSH hbEdit= CreateSolidBrush(RGB(210,200,150));
	static HBRUSH hbScrollh= CreateSolidBrush(RGB(60,250,240));
	static HBRUSH hbScrollv= CreateSolidBrush(RGB(250,160,230));
	static HBRUSH hbList= CreateSolidBrush(RGB(120,170,130));
	//Déclarer et définir notre police:
	static HFONT hPolice=CreateFont(32,0,0,0,400,0,0,0,0,0,0,0,0,"Arial");
	//Déclaration de nos contrôles:
	static HWND hBouton1,hBouton2,hBouton3,hBouton4,hBouton5,hBouton6,hEdit;
	static HWND hCheckbox1,hCheckbox2,hRadio1,hRadio2,hScrollh,hScrollv,hList,hQuitter;
	static HWND hStatic1,hStatic2,hStatic3,hStatic4,hStatic5,hRadios,hChecks,hCadre;
	 
	switch (message)
	{
		case WM_INITDIALOG://Initialisation de notre boite de dialogue
			{
				//Ecrire le titre de la boite de dialogue:
				SetWindowText(hDlg,"Couleurs et transparence");
				//Création de nos contrôles:
				hBouton1=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_OWNERDRAW,20,30,80,24,hDlg,0,0,0);
				hBouton2=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_OWNERDRAW,20,70,80,24,hDlg,0,0,0);
				hBouton3=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_OWNERDRAW,20,110,80,24,hDlg,0,0,0);
				hBouton4=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_OWNERDRAW,20,150,80,24,hDlg,0,0,0);
				hBouton5=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_OWNERDRAW,20,190,80,24,hDlg,0,0,0);
				hBouton6=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_OWNERDRAW,20,230,80,24,hDlg,0,0,0);
				hQuitter=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_OWNERDRAW,310,230,80,24,hDlg,0,0,0);
				hEdit=CreateWindowEx(WS_EX_CLIENTEDGE,"EDIT",0,WS_CHILD | WS_VISIBLE,130,233,150,20,hDlg,0,0,0);
				hCheckbox1=CreateWindow("BUTTON","Check 1",WS_CHILD | WS_VISIBLE | BS_AUTOCHECKBOX ,308,167,100,16,hDlg,0,0,0);
				hCheckbox2=CreateWindow("BUTTON","Check 2",WS_CHILD | WS_VISIBLE | BS_AUTOCHECKBOX ,308,187,100,16,hDlg,0,0,0);
				hRadio1=CreateWindow("BUTTON","Radio 1",WS_CHILD | WS_VISIBLE | BS_AUTORADIOBUTTON ,305,106,100,16,hDlg,0,0,0);
				hRadio2=CreateWindow("BUTTON","Radio 2",WS_CHILD | WS_VISIBLE | BS_AUTORADIOBUTTON ,305,126,100,16,hDlg,0,0,0);
				hScrollh=CreateWindow("SCROLLBAR",0,WS_CHILD | WS_VISIBLE | SBS_HORZ,20,270,400,20,hDlg,0,0,0);  
				hScrollv=CreateWindow("SCROLLBAR",0,WS_CHILD | WS_VISIBLE | SBS_VERT,420,30,20,240,hDlg,0,0,0);
				hList=CreateWindowEx(WS_EX_CLIENTEDGE,"LISTBOX",0,WS_CHILD | WS_VISIBLE,130,110,150,104,hDlg,0,0,0);
				hRadios=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_GROUPBOX,300,91,90,56,hDlg,0,0,0);
				hChecks=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_GROUPBOX,300,151,90,59,hDlg,0,0,0);
				hCadre=CreateWindow("BUTTON",0,WS_CHILD | WS_VISIBLE | BS_GROUPBOX,130,39,260,48,hDlg,0,0,0);
				hStatic1=CreateWindow("STATIC","Edit :",WS_CHILD | WS_VISIBLE ,130,216,80,16,hDlg,0,0,0);
				hStatic2=CreateWindow("STATIC","ListBox :",WS_CHILD | WS_VISIBLE ,130,93,80,16,hDlg,0,0,0);
				hStatic3=CreateWindow("STATIC","www.cppfrance.com",WS_CHILD | WS_VISIBLE | SS_CENTER,132,49,256,36,hDlg,0,0,0);
				hStatic4=CreateWindow("STATIC","Static :",WS_CHILD | WS_VISIBLE ,130,30,80,16,hDlg,0,0,0);
				//Ajouter deux éléments dans la LISTBOX:
				SendMessage(hList,LB_ADDSTRING,0,(LPARAM)"Premier élément");
				SendMessage(hList,LB_ADDSTRING,0,(LPARAM)"Deuxième élément");
				//Changer la police de notre STATIC principal:
				SendMessage(hStatic3,WM_SETFONT,(WPARAM)hPolice,1);
				//Donner le focus à notre EDIT:
				SetFocus(hEdit);
				return 0;			
			}

		case WM_CLOSE://Fermeture
			    //Suppression des objets créés:
				DeleteObject(hbDialog);
				DeleteObject(hbEdit);
				DeleteObject(hbScrollh);
				DeleteObject(hbScrollv);
				DeleteObject(hbList);
				DeleteObject(hPolice);
				//Fermeture de la Boite de dialogue:
				EndDialog(hDlg,0);
				return 0;

		case WM_CTLCOLORDLG://Couleur de fond de la boite de dialogue
				return (INT_PTR)hbDialog;
		   
		case WM_DRAWITEM://Dessin des boutons
			{
				LPDRAWITEMSTRUCT lpdis = (LPDRAWITEMSTRUCT)lParam;

                if (lpdis->hwndItem==hBouton1)//Bouton jaune
                {
					DessinerBouton(lpdis,"Jaune",RGB(0,0,255),RGB(255,255,0));
				    return TRUE;
                }

				if (lpdis->hwndItem==hBouton2)//Bouton vert
                {     
					DessinerBouton(lpdis,"Vert",RGB(114,95,42),RGB(0,255,0));
                    return TRUE;
                }

				if (lpdis->hwndItem==hBouton3)//Bouton bleu
                {
					DessinerBouton(lpdis,"Bleu",RGB(255,255,0),RGB(0,0,255));		
                    return TRUE;
                }

				if (lpdis->hwndItem==hBouton4)//Bouton rouge
                {
					DessinerBouton(lpdis,"Rouge",RGB(255,255,255),RGB(255,0,0));		
                    return TRUE;
				}

			    if (lpdis->hwndItem==hBouton5)//Bouton blanc
                {
					DessinerBouton(lpdis,"Blanc",RGB(255,0,0),RGB(255,255,255));		                  
                    return TRUE;
                }

		    	if (lpdis->hwndItem==hBouton6)//Bouton noir
                {
					DessinerBouton(lpdis,"Noir",RGB(0,255,255),RGB(0,0,0));		                  
                    return TRUE;
                }

				if (lpdis->hwndItem==hQuitter)//Bouton Quitter
                {
					DessinerBouton(lpdis,"Quitter",RGB(255,255,0),RGB(114,95,42));		                  
                    return TRUE;
                }
                break;
			}

		case WM_CTLCOLORSTATIC://Dessin des STATICs, RADIOs et CHECKBOXes
			{
				if ((HWND)lParam==hCheckbox1) 
				{
					SetTextColor((HDC)wParam,RGB(0,0,255));
					SetBkMode((HDC)wParam, TRANSPARENT);
					return (BOOL)GetStockObject(NULL_BRUSH);
				}

				if ((HWND)lParam==hCheckbox2) 
				{
					SetTextColor((HDC)wParam,RGB(0,0,255));
					SetBkMode((HDC)wParam, TRANSPARENT);
					return (BOOL)GetStockObject(NULL_BRUSH);
				}

				if ((HWND)lParam==hRadio1) 
				{
					SetTextColor((HDC)wParam,RGB(255,0,0));
					SetBkMode((HDC)wParam, TRANSPARENT);
					return (BOOL)GetStockObject(NULL_BRUSH);
				}

				if ((HWND)lParam==hRadio2) 
				{
					SetTextColor((HDC)wParam,RGB(255,0,0));
					SetBkMode((HDC)wParam, TRANSPARENT);
					return (BOOL)GetStockObject(NULL_BRUSH);
				}

				if ((HWND)lParam==hStatic1) 
				{
					SetTextColor((HDC)wParam,RGB(255,255,255));
					SetBkMode((HDC)wParam, TRANSPARENT);
					return (BOOL)GetStockObject(NULL_BRUSH);
				}

				if ((HWND)lParam==hStatic2) 
				{
					SetTextColor((HDC)wParam,RGB(255,255,255));
					SetBkMode((HDC)wParam, TRANSPARENT);
					return (BOOL)GetStockObject(NULL_BRUSH);
				}

				if ((HWND)lParam==hStatic3) 
				{
					SetTextColor((HDC)wParam,RGB(170,200,175));
					SetBkMode((HDC)wParam, TRANSPARENT);
					return (BOOL)GetStockObject(NULL_BRUSH);
				}

				if ((HWND)lParam==hStatic4) 
				{
					SetTextColor((HDC)wParam,RGB(255,255,255));
					SetBkMode((HDC)wParam, TRANSPARENT);
					return (BOOL)GetStockObject(NULL_BRUSH);
				}
				return 0;
			}

		case WM_CTLCOLOREDIT://Dessin du contrôle EDIT
			{
				if ((HWND)lParam==hEdit) 
				{
					SetTextColor((HDC)wParam,RGB(70,110,60));
					SetBkColor((HDC)wParam,RGB(210,200,150));
					return (BOOL) hbEdit;
				}			
				return 0;
			}

		case WM_CTLCOLORSCROLLBAR://Dessin des SCROLLBARs
			{
				if ((HWND)lParam==hScrollh)  return (BOOL) hbScrollh;
				if ((HWND)lParam==hScrollv)  return (BOOL) hbScrollv;
				return 0;
			}

		case WM_CTLCOLORLISTBOX://Dessin de la LISTBOX
			{
				if ((HWND)lParam==hList)
				{
					SetTextColor((HDC)wParam,RGB(255,255,0));
					SetBkColor((HDC)wParam,RGB(120,170,130));
					return (BOOL) hbList;
				}
				return 0;
			}

		case WM_COMMAND://Clic sur un contrôle
			{  
				//Obtenir le device contexte du STATIC principal:
				HDC hdc=GetDC(hStatic3);
				//Déterminer la zone dessinable:
			    RECT rect;
			    GetClientRect(hStatic3,&rect);
				//Effacer contenu du STATIC:
			    FillRect(hdc,&rect,hbDialog);
				//Choisir une couleur au hasard:
			    int couleur=rand()%256*0x10000+rand()%256*0x100+rand()%256;
			    //Définir la couleur du texte:
				SetTextColor(hdc,couleur);
				//Rendre le Static transparent:
			    SetBkMode(hdc,TRANSPARENT);
				//Choisir notre police:
			    HFONT hOrigi=(HFONT)SelectObject(hdc,hPolice);
				//Convertir la couleur en valeur héxadécimale:
			    char valeurhexa[6];
			    itoa(couleur,valeurhexa,16);
		        //Ecrire la valeur dans le STATIC
			    DrawText( hdc, valeurhexa, -1, &rect, DT_CENTER | DT_VCENTER | DT_SINGLELINE );
			    //Restaurer la police originale:
				SelectObject(hdc,hOrigi);
				//Libérer le device context:
			    ReleaseDC(hStatic3,hdc);

				if ((HWND)lParam==hQuitter)//clic sur Quitter
				{
					//Envoi du message de fermeture
					SendMessage(hDlg,WM_CLOSE,0,0);
					break;
				}
		   
			}
	}
	//Retour:
	return 0;
}
/******************************************************************/

/******************************************************************/
/*****************  Fonction WinMain  *****************************/
/******************************************************************/
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow)
{  
	//Allouer de la mémoire pour notre dialog template:
    LPDLGTEMPLATE lpdt = ( LPDLGTEMPLATE) GlobalAlloc(GPTR, 512); 
    if (!lpdt) return 1;    
    // Définir les propriétés de la boite de dialogue:
    lpdt->style = DS_CENTER | WS_POPUP | WS_MINIMIZEBOX| WS_SYSMENU | DS_MODALFRAME | WS_CAPTION; 
    lpdt->x = lpdt->y  = 0;  lpdt->cx = 230; lpdt->cy = 155;         
    //Lancer la boite de dialogue
    DialogBoxIndirect(hInstance,lpdt,NULL,(DLGPROC)DialogProc);
	//Libération de la mémoire allouée:
    GlobalFree((HGLOBAL)lpdt); 
	//Retour:
	return 0;
}
/******************************************************************/