Visual C++ Questions And Answers

1⟩ Why Array Index starts from Zero?

This boils down to the concept of Binary digits. Take an array size of 64 for example. We start from 0 and end at 63. We require 6 bits.But, if we were to start from 1 and end at 64, we would require 7 bits to store the same number, thus increasing the storage size.

Is this answer helpful? 0 Yes | 0 No

Answer This Question

237 views

2⟩ How can server communicate with more than one client?

Server can communicate with more than one client with using threading concepts there are java threads which are allocated to every client

when he logs in to server,the thread handles the client.

Is this answer helpful? 0 Yes | 0 No

Answer This Question

214 views

3⟩ How to change the Size of CButton at Runtime?

CButton *btnsample = (CButton *)GetDlgItem(IDC_BUTTON1);///suppose IDC_BUTTON1 is the ID of CButton/

btnsample->SetWindowPos(0,0,0,100,100,SWP_FRAMECHANGED);

Is this answer helpful? 0 Yes | 0 No

Answer This Question

211 views

4⟩ How to Enable and Disable CButton at runtime?

CButton *btnsample = (CButton *)GetDlgItem(IDC_BUTTON1);

btnsample->EnableWindow(FALSE); // To Disable a button

btnsample->EnableWindow(TRUE); //To Enable a Button

Is this answer helpful? 0 Yes | 0 No

Answer This Question

251 views

5⟩ How to change the Text of a CButton at Runtime?

CButton *btnsample= (CButton *)GetDlgItem(IDC_BUTTON1); //suppose IDC_BUTTON1 is the ID of CButton

btnsample->SetWindowText(_T("Lahore"));

Is this answer helpful? 0 Yes | 0 No

Answer This Question

233 views

6⟩ What is command routing in VC++?

in SDI:

View -> Doc -> FrameWnd -> App.

In MDI:

View->CDocument->CMDIChildWnd ->CMDIFrameWnd -> CWinApp.

Is this answer helpful? 0 Yes | 0 No

Answer This Question

210 views

7⟩ How to load an Icon on a CButton at Runtime?

CButton *btnsample = (CButton *)GetDlgItem(IDC_BUTTON1);

btnsample->ModifyStyle(0,BS_ICON,SWP_FRAMECHANGED); //change the style of CButton

HICON hIcon = ::LoadIcon(AfxGetInstanceHandle(),MAKEINTRESOURCE(IDI_ICON)); //load an Icon assuming IDI_ICON is ID of ICON

btnsample->SetIcon(hIcon);

Is this answer helpful? 0 Yes | 0 No

Answer This Question

205 views

8⟩ How to change the Mouse Pointer Over a Button at runtime?

Assuming that you have set the button's ID as IDC_BTNSAMPLE in the resource editor :-

// You have to handle the WM_SETCURSOR message handler to do that

BOOL CTestDlg::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)

{

if (pWnd == GetDlgItem(IDC_BTNSAMPLE))

{ // To load a standard cursor

::SetCursor(AfxGetApp()->LoadStandardCursor(IDC_CROSS));

// To load your own custom cursor. Assuming that you have created a

// Cursor in the resource editor and named it as IDC_CURSAMPLE

::SetCursor(AfxGetApp()->LoadCursor(MAKEINTRESOURCE(IDC_CURSAMPLE)));

// Remember to return TRUE here return TRUE;

}

return CDialog::OnSetCursor(pWnd, nHitTest, message);

}

Is this answer helpful? 0 Yes | 0 No

Answer This Question

214 views

9⟩ How to change the position of Button at runtime?

Assuming that you have set the button's ID as IDC_BTNSAMPLE in the resource editor :-

CButton *pBtnSample = (CButton *)GetDlgItem(IDC_BTNSAMPLE);

pBtnSample->SetWindowPos(0,0,0,100,100,SWP_FRAMECHANGED);

Is this answer helpful? 0 Yes | 0 No

Answer This Question

225 views

10⟩ How to change the Properties of a Button at runtime?

Assuming that you have set the button's ID as IDC_BTNSAMPLE in the resource editor :-

We have to use the ModifyStyle Function to do this. The function is defined as follows :-

CButton *pBtnSample = (CButton *)GetDlgItem(IDC_BTNSAMPLE); // Make the button look like a checkbox

pBtnSample->ModifyStyle(0,BS_AUTOCHECKBOX,SWP_FRAMECHANGED); // Remove the checkbox style and make it again normal

pBtnSample->ModifyStyle(BS_AUTOCHECKBOX,0,SWP_FRAMECHANGED);

Is this answer helpful? 0 Yes | 0 No

Answer This Question

203 views

Visual C++

Home Computer Programming Visual C++

10 Visual C++ Questions And Answers

1⟩ Why Array Index starts from Zero?

2⟩ How can server communicate with more than one client?

3⟩ How to change the Size of CButton at Runtime?

4⟩ How to Enable and Disable CButton at runtime?

5⟩ How to change the Text of a CButton at Runtime?

6⟩ What is command routing in VC++?

7⟩ How to load an Icon on a CButton at Runtime?

8⟩ How to change the Mouse Pointer Over a Button at runtime?

9⟩ How to change the position of Button at runtime?

10⟩ How to change the Properties of a Button at runtime?

Quick Links:

Visual C++

Home Computer Programming Visual C++

10 Visual C++ Questions And Answers

1⟩ Why Array Index starts from Zero?

2⟩ How can server communicate with more than one client?

3⟩ How to change the Size of CButton at Runtime?

4⟩ How to Enable and Disable CButton at runtime?

5⟩ How to change the Text of a CButton at Runtime?

6⟩ What is command routing in VC++?

7⟩ How to load an Icon on a CButton at Runtime?

8⟩ How to change the Mouse Pointer Over a Button at runtime?

9⟩ How to change the position of Button at runtime?

10⟩ How to change the Properties of a Button at runtime?

BE THE FIRST TO KNOW

Quick Links: