FENÊTRE AVEC OU SANS BOUTON

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

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow);
BOOL CALLBACK mainWindow(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
BOOL CALLBACK fenetre2(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
BOOL ShowMyButton;
HINSTANCE hInst;
HWND hCtrl;

BOOL CALLBACK mainWindow(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){
		
	switch(message) {
		case WM_INITDIALOG:
				return TRUE;
	
		case WM_COMMAND:
			switch(wParam) {

				case IDC_CLOSE:
				DestroyWindow(hWnd);
					return TRUE;

				case IDC_EXECUTE:
					
					if(SendMessage(GetDlgItem(hWnd,IDC_RADIO1),BM_GETCHECK,0,0) == BST_CHECKED)
						ShowMyButton= TRUE;
					if(SendMessage(GetDlgItem(hWnd,IDC_RADIO2),BM_GETCHECK,0,0) == BST_CHECKED)
						ShowMyButton= FALSE;

					return (int)DialogBox(hInst,MAKEINTRESOURCE(IDD_FENETRE2),NULL,fenetre2);

				default:
					return FALSE;
			}
	}

	return FALSE;
}



BOOL CALLBACK fenetre2(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){

	switch(message) {
	case WM_INITDIALOG:

		if(ShowMyButton){
			hCtrl = GetDlgItem(hWnd, IDC_BOUTON_A_AFFICHER);
			ShowWindow(hCtrl, SW_SHOW);}
			return TRUE;

	case WM_COMMAND:
		switch(wParam) {

			case IDC_CLOSE:
			DestroyWindow(hWnd);
				return TRUE;
		}
	}
	return FALSE;
}


int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	return (int)DialogBox(hInstance,MAKEINTRESOURCE(FORM_MAIN),NULL,mainWindow);
}