API Talk - windows programming/create a textbox and track change event in winapi

Windows Programming > create a textbox and track change event in winapi

Create a Textbox / Edit control and track change event

In this example we will create a simple dialog and a simple edit control on it (text box), and track the change by the user, i.e when user changes the text in the text box. A very simple to understand win32 api code.



#include <windows.h>





int textbox_id = 156;





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


{


	if(message == WM_CLOSE) 


		PostQuitMessage(0);		


		


	//check if text in textbox has been changed by user


	if(message==WM_COMMAND && HIWORD(wParam)==EN_CHANGE && LOWORD(wParam)==textbox_id) 


	{


		//text in the textbox has been modified


		//do your coding here


	}


	


	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 the textbox


	CreateWindowEx(


		WS_EX_CLIENTEDGE, //special border style for textbox


		"EDIT","Modify me",WS_VISIBLE | WS_CHILD,


		10,50,170,50,myDialog,(HMENU)textbox_id,NULL,NULL


	);


	


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





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


		TranslateMessage(&msg); 


		DispatchMessage(&msg);


	}





	return 0; 	


}

	Free Educational Resource Center for teachers and students. Includes Interviews, Sourcecode, Free Software, Research Papers, Articles, Tutorials and much more..	R E S E A R C H A C T I V I T Y . C O M Our Fellow Research Center for Ph.D Schollars
Home About Submit & Earn	Archives: C And C + + Programming » Dev Packages » Interviews » Php Mysql Programming » Windows Programming
		search