API Talk - windows programming/create a button and track click event in winapi

Windows Programming > create a button and track click event in winapi

Create a Button and track click event

Creating simple button on a simple dialog using pure window API. And tracking the user input, i.e when user clicks the button.



#include <windows.h>





int button_id = 156; //choose any positive integer value





BOOl WINAPI myProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) 


{


	if(message == WM_CLOSE) 


		PostQuitMessage(0);		


		


	//check if button was clicked


	if(message==WM_COMMAND && LOWORD(wParam)==button_id)


		MessageBox(hwnd,"button has been clicked","Message title",0);	


	


	return false; 


}





int APIENTRY WinMain(HINSTANCE, HINSTANCE, LPSTR, int)


{





	MSG msg;


	HWND myDialog = CreateWindowEx(


		0,WC_DIALOG,"My Window",WS_OVERLAPPEDWINDOW | WS_VISIBLE,


		400,100,200,200,NULL,NULL,NULL,NULL


	);


	//create button


	CreateWindowEx(


		0,"BUTTON","Click me",BS_PUSHBUTTON | WS_VISIBLE | WS_CHILD,


		50,50,100,25,myDialog,(HMENU)button_id,NULL,NULL


	);


	


	SetWindowLong(myDialog, DWL_DLGPROC, (long)myProc);


	


	while(GetMessage(&msg,NULL,0,0))  {


		TranslateMessage(&msg);


		DispatchMessage(&msg); 


	} 





	return 0; 	


}

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