Show a message box when I press a button

Question

0.00/5 (No votes)

See more:

I wrote:

int DisplayResourceNAMessageBox()
{
	int msgboxID = MessageBox(
		NULL,
		(LPCWSTR)L"Resource not available\nDo you want to try again?",
		(LPCWSTR)L"Account Details",
		MB_ICONWARNING | MB_CANCELTRYCONTINUE | MB_DEFBUTTON2
	);

	switch (msgboxID)
	{
	case IDCANCEL:
		// TODO: add code
		break;
	case IDTRYAGAIN:
		// TODO: add code
		break;
	case IDCONTINUE:
		// TODO: add code
		break;
	}

	return msgboxID;
}

void CMFCApplication7Dlg::OnBnClickedMessage()
{
	//TCHAR e[1000] = _T("HELLO");
	//MessageBox(NULL, e);
	DisplayResourceNAMessageBox;


	
	// TODO: Add your control notification handler code here
}

What I have tried:

message box doen't show when I click button, but I don't know why, I work with mfc c++

Posted 20-Sep-19 2:55am

Member 14594285

Updated 20-Sep-19 3:29am

v2

Add a Solution

3 solutions

Solution 3

if I wrote in .h

int DysplayResourcedNAMessageBox()

and in .cpp

DisplayResourceNAMessageBox();

I have this error:

Severity	Code	Description	Project	File	Line	Suppression State
Error	LNK2019	unresolved external symbol "public: int __thiscall CMFCApplication7Dlg::DisplayResourceNAMessageBox(void)" (?DisplayResourceNAMessageBox@CMFCApplication7Dlg@@QAEHXZ) referenced in function "public: void __thiscall CMFCApplication7Dlg::OnBnClickedButton6(void)" (?OnBnClickedButton6@CMFCApplication7Dlg@@QAEXXZ)	MFCApplication7	C:\Dev2015\Prg\MFCApplication7\MFCApplication7Dlg.obj	1

Posted 20-Sep-19 3:29am

Member 14594285

Comments

Richard Deeming 20-Sep-19 9:39am

Yet another comment posted as a "solution".

Solution 1

You don't call the containing method:

C++

void CMFCApplication7Dlg::OnBnClickedMessage()
{
	DisplayResourceNAMessageBox;
}

Add "()" to the line:

C++

void CMFCApplication7Dlg::OnBnClickedMessage()
{
	DisplayResourceNAMessageBox();

Posted 20-Sep-19 3:11am

OriginalGriff

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Accepted Answer · 2019-09-20T03:20:00

Solution 2

Quote:
void CMFCApplication7Dlg::OnBnClickedMessage()
{
//TCHAR e[1000] = _T("HELLO");
//MessageBox(NULL, e);
DisplayResourceNAMessageBox;

Since you missed the round brackets, the statement has NO effect. Replace it with

C++

DisplayResourceNAMessageBox();

Remember to enable all the warnings of your compiler.

Posted 20-Sep-19 3:20am

CPallini

Comments

Member 14594285 20-Sep-19 9:39am

I solved, I didn't write cmfApplication::Display..