Visual C++ :: MFC- Receiving Button Click Message Failed
Oct 2, 2014
I've created a new dialog in my MFC dialog based application. the new dialog contains 5 control buttons. The following happens and I don't understand why?
1. click on buttonX. (result ok, OnBnClicked message is sent)
2. click on on any place of the application, but not on the dialog.(removing focus from dialog)
3. click again on buttonX (FAILED, OnBnClicked message is NOT sent). but if instead I click on any other button in the dialog (result ok, OnBnClicked message is sent).
And when I do:
1. ...
2. ...
3. click on the dialog area just to set focus on the dialog again
4. click again on buttonX. (result ok, OnBnClicked message is sent)
**I need to do step 3 only if I want to click again on the buttonX! why?? I think it related to SetFocus() but I m not sure how.
I've tried different style like, tool windows, overlapped, popup. it happens in all the cases.
Code:
class CToolsDlg : public CBDialog {
DECLARE_DYNAMIC(CToolsDlg)
public:
CToolsDlg(CWnd* pParent = NULL); // standard constructor
virtual ~CToolsDlg();
CToolTipCtrl m_ToolsTips;
[Code] .....
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Oct 11, 2013
I'm trying to write a program that passes Windows messages back and forth from another program that controls a laboratory instrument. I was able to write a program that successfully passes instructions, as evidenced by the instrument doing what I tell it. However, I am having trouble getting a return status from the instrument. The manual instructs the following:
// demo code, etc.
// send message to the instrument operating software here...
SendMessage(hwnd, WM_COPYDATA, tag, (LPARAM) &cd)
Either a completion message or return data is returned. Remote commands ReturnStatus, ReturnTiming, and ReturnData return data. In either case, data is received through an asynchronous windows message inside Win32 COPYDATASTRUCT type data packet.For example, a typical OnCopyData window callback is shown below, where the string data retrieved is finally stored into a Microsoft CString object. Note the use of variable replyTag, discussed above, which is used to isolate the correct windows message returned.
BOOL CUserDlg::OnCopyData(CWnd* pWnd, COPYDATASTRUCT* cd) {
….
if (cd->dwData == replyTag) {
/* String pointing to status */
CString retStatus = (char*) cd->lpData;
}
….
}
I can't tell if my problem is in generating the replyTag, getting the HWND to my own console window, or the actual receiving part of the code.
When setting the replyTag, the manual instructs: UINT replyTag = RegisterWindowMessage(“SOFTMaxProReplyMsg”);. However, I have to put an "L" in front of the string or I get a data type error (can't convert const char* to LPCWSTR).
When setting a HWND for myself, the manual instructs: HWND MyWnd = GetSafeHwnd().
That produces an error because GetSafeHwnd is a function of the Cwnd class, and I don't have a Cwnd. I have replaced it with HWND MyWnd = GetConsoleWindow();
When listening for the reply message, the manual instructs what I quoted above. However, I again don't have a Cwnd. I therefore simply used
if (cd.dwData == replyTag) {
CString retStatus = (char*) cd.lpData;
}
The above if statement always evaluates false, and the cd.lpdata contains the message that I had sent out instead of a reply message. How to get a reply using my console application. Here is the full code of my function:
Code:
#include "stdafx.h"
#include<iostream>
#include<vector>
#include<string>
#include<afxwin.h>
using namespace std;
void SendCommand(string command) {
// Get tags to identify the receiving and sending messages
[code]....
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Code:
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
}
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var db = Simple.Data.Database.OpenNamedConnection("sqlConn");
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dt.Columns.Add(dateString);
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[Code] .....
if you look at 1st image 1 you can see what it looks like -- when i hit the button i just want a blank column to show next to the last column however i get image 2 results how can i fix this.
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Here is the code if needed:
XAML:
<Window x:Class="ClockApp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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x:Name="MyWindow"
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[Code] ....
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Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS1002: ; expected
Source Error:
Line 7: private void Login(Object sender, EventArgs e)
Line 8: {
Line 9: oleDbConnection dbconn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;data source=" + Server.MapPath("../dat/main.mdb"));
Line 10: dbconn.Open();
Line 11:
//Function code below:
<%@ Page Language="C#" Debug="False"%>
using System.Data;
<script runat="server">
private void Login(Object sender, EventArgs e) {
[Code] ....
The error is on line 9 by the way.
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namespace ArrayButtons {
public partial class MyButton : UserControl {
public MyButton() {
[Code].....
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Attached Images
two.jpg (69.7 KB)
three.jpg (76.7 KB)
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cin
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...
//
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File: f:ddvctoolscrt_bldself_x86crtsrcvsprintf.c
Line:244
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Code:
void CRotateImageView::OnInitialUpdate() {
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Code:
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Program: C:TestDebugTest.exe
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Line:932
Expression:vector subscript out of range
Code:
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I have successfully compiled a code where I created an array of buttons. I have added a click event to it like this :
Code:
buttons[indexofhashis2]->Click += gcnew System::EventHandler(this, &Execute::GOBUT_Click);
I have a standard event like this
Code:
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Mar 18, 2015
I'm having problem using the click event in a web browser control. I have a control called CIEBrowser that implements a Web control. Here a message_map:
Code:
IMPLEMENT_DYNCREATE(CIEBrowser, CWnd)
BEGIN_MESSAGE_MAP(CIEBrowser, CWnd)
ON_COMMAND_RANGE(ID_IEHOME,ID_IESTOP, OnToolBarCmd)
ON_UPDATE_COMMAND_UI_RANGE(ID_IEHOME,ID_IESTOP, OnUpdateToolBarCmd)
ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTW, 0, 0xFFFF, OnToolTipNotify)
ON_NOTIFY_EX_RANGE(TTN_NEEDTEXTA, 0, 0xFFFF, OnToolTipNotify)
END_MESSAGE_MAP()
I want to implement a derived class called CFulltextCtrl.
Code:
IMPLEMENT_DYNCREATE(CFulltextCtrl, CIEBrowser)
BEGIN_MESSAGE_MAP(CFulltextCtrl, CIEBrowser)
ON_WM_PAINT()
ON_WM_HELPINFO()
END_MESSAGE_MAP()
I have a dialog with a control using this CFulltextCtrl. I can create and show the html perfectly inside the form. But all links inside this control don't work (scenario 1). If I create a form who have a control of the type CIEBrowser, the EXACTLY same html code works perfectly (scenario 2).
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Code:
BEGIN_DISPATCH_MAP(CFulltextCtrl, CIEBrowser)
DISP_FUNCTION_ID(CFulltextCtrl,"HTMLELEMENTEVENTS2_ONCLICK", DISPID_HTMLELEMENTEVENTS2_ONCLICK,
OnClick, VT_EMPTY, VTS_DISPATCH)
DISP_FUNCTION_ID(CFulltextCtrl,"HTMLELEMENTEVENTS2_ONKEYDOWN", DISPID_HTMLELEMENTEVENTS2_ONKEYDOWN,
OnKeyDown, VT_EMPTY, VTS_DISPATCH)
DISP_FUNCTION_ID(CFulltextCtrl,"HTMLELEMENTEVENTS2_ONKEYUP", DISPID_HTMLELEMENTEVENTS2_ONKEYUP,
OnKeyUp, VT_EMPTY, VTS_DISPATCH)
END_DISPATCH_MAP()
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