2.17 win32 按钮事件的处理

按钮的本质就是窗口

点击查看代码

void CreateButton(HWND hwnd)									
{									
	HWND hwndPushButton;								
	HWND hwndCheckBox;								
	HWND hwndRadio;								
									
	hwndPushButton = CreateWindow ( 								
		TEXT("button"), //系统自带的类							
		TEXT("普通按钮"),							
		//WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | BS_DEFPUSHBUTTON,							
		WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | BS_DEFPUSHBUTTON,							
		10, 10,			//位置和大小				
		80, 20,			//位置和大小					
		hwnd, 			//窗口句柄				
		(HMENU)1001,		//子窗口ID	-用来识别				
		hAppInstance, 		//句柄					
		NULL);							
									
	hwndCheckBox = CreateWindow ( 								
		TEXT("button"), 							
		TEXT("复选框"),							
		//WS_CHILD | WS_VISIBLE | BS_CHECKBOX | BS_AUTOCHECKBOX,							
		WS_CHILD | WS_VISIBLE | BS_CHECKBOX |BS_AUTOCHECKBOX ,							
		10, 40,							
		80, 20,							
		hwnd, 							
		(HMENU)1002,		//子窗口ID					
		hAppInstance, 							
		NULL);							
									
	hwndRadio = CreateWindow ( 								
		TEXT("button"), 							
		TEXT("单选按钮"),							
		//WS_CHILD | WS_VISIBLE | BS_RADIOBUTTON | BS_AUTORADIOBUTTON,							
		WS_CHILD | WS_VISIBLE | BS_RADIOBUTTON  ,							
		10, 70,							
		80, 20,							
		hwnd, 							
		(HMENU)1003,		//子窗口ID					
		hAppInstance, 							
		NULL);							
} 									
![image](https://img2023.cnblogs.com/blog/3001071/202302/3001071-20230217213921302-1715905133.png)

按钮的本质就是窗口

按钮的WNDCLASS不是我们定义的，是系统预定义好的。如果我们想知道，系统预定义的WNDCLASS都包含什么样的信息

点击查看代码

TCHAR szBuffer[0x20];					
GetClassName(hwndPushButton,szBuffer,0x20);					
					
WNDCLASS wc;					
GetClassInfo(hAppInstance,szBuffer,&wc);					
OutputDebugStringF("-->%s\n",wc.lpszClassName);					
OutputDebugStringF("-->%x\n",wc.lpfnWndProc);