I created a simple calculator in Win App. When I played it, the form is displayed blank. Not a single control is shown.
The only thing I've done differently is adding a Coded UI Test in my test project. This is the first time I'm going to try to add a coded UI test so I wonder if that's the cause for this.
In my class I'm trying to display the elapsed time as my label on a windows form. I've been reading up on all the different articles online and have tried these three methods all with the same result:
1. Using the System.Timers class
2. Built in Timer sub-class
3. Defining directly inside of my class the StartTime, etc. variables.
All of these still result in the following error:
Cross-thread operation not valid: Control 'User_Interface' accessed from a thread other than the thread it was created on.
Currently, my windows form is being called by another class, but I'm not sure if this is the cause of the problem.
This is a sample of the code that I'm currently using to show the elapsed time:
private void OnTimedEvent (object source, ElapsedEventArgs c)
{
TimeSpan time;
currentTime = DateTime.Now;
[Code].....
I made one application in Visual Studio 2008. The main form is maximized, and contains many panels with different controls (like buttons, listboxes, etc,). All the controls have the dock option fixed as true in panels, and the panels occupied the whole area of form.
Now, when I try to run this application in a machine, with different resolution of the screen, the form is maximized (naturally), but the panels are not resizing, so the form has many null area. How can I resize the panel so, that they fill the whole form area?
I have a form with a picturebox and some buttons to move the picturebox. I don't want the user to guide the picturebox out of the form even by dragging the form border picturebox moves just in the form border, and also there is a button to guide the picturebox to the start position (start choose by user). What can i do?
View 1 Replies View Relatedis there a difference when creating a graphic user interface dragging and dropping controls in the form and coding on source code, difference in a sense that the code will appear differently if the control is dragged then the code appears automatically on the source code as compared to typing it on source code?
View 2 Replies View RelatedI need make a CBitmap or a streamdata from a System.Windows.Controls::Image(rendered out put)in a SDI mfc application (supporting clr). Here is my codes:
Code:
using namespace System;
using namespace System::IO;
using namespace System::Collections::Generic;
using namespace System::Windows;
using namespace System::Windows::Controls;
[Code] .....
By this codes i can read datastream from bitmapSource but in this way somthing goes wrong in most of GIF animations. After debug i found out i need 3 more things too decode a gif animation - (x,y) position and size of each frame and disposal method for each one - finally i just found a way to draw tru images on a form window by this codes:
Code:
System::Windows::Window^ mainWindow;
mainWindow = gcnew System::Windows::Window();
mainWindow->Title = "GIF Imaging Sample";
//ScrollViewer^ mySV = gcnew ScrollViewer();
array<System::Byte>^ pixels = gcnew array<System::Byte>(bitmapSource->PixelHeight * Stride);
[Code] ...
When i change
Code: bitmapSource = decoder->Frames[0];
to
Code: bitmapSource = decoder->Frames[01];
frame[1] has drawn perfectly on window(i think some how Image class takes care about - (x,y) position and size of each frame and disposal method for each one ),so im wonder if how can i make a CBitmap or a data stream from System.Windows.Controls::Image class to use in mfc app.
How to show print preview in control. I have class Printer : PrintDocument that contains what i want to print but how to show that in form and in which control.
updated: To be more precise i have listbox with documents for printing. When user selects document i want to show print preview in some control next to this
I am trying to modify a user control while modifying the main form. For example i have my main form open in one visual c# window and my user controls in another. However it seems that in order for my code changes in my user control to have any effect on the main form i need to close all my c# windows and then re-open them and even then that sometimes doesn't work am i doing anything wrong or is this supposed to happen??
Also yes i am saving and clicking build solution on my user controls.
How to make a keypad in my windows form? Need to finish my project at school...ATM machine app..
It is just the keypad part. Do i put 10 buttons and add a textbox...
I'm fairly new to visual C++ programming in a windows form and the code displayed below works fine. However my issue is as soon as the program is running it will display "failure" on label7 as soon as the button is clicked. I understand why it is doing this as "a" is not in the textbox at this time so it reads the else line and displays the message. When I enter "a" in the textbox everything works fine and label7 changes to the right message.
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
label1->Text = "Question 1: test";
label2->Text = "A. test";
label3->Text = "B. test";
label4->Text = "C. test";
[code].....
I need to write a windows form application that allows the user to enter a credit card number and credit card type and then determines whether it is a valid number using the following rules:
1.) the first number is:
a. 4 for visa
b. 5 for master card
c. 37 for american express
d. 6 for discover
2.) passes the mod 10/ luhn check, which is calculated as:
a. from right to left, multiply every other digit by 2. when doubling a digit results in a two digit number, add the numbers to get
a single digit. ( like 6 * 2 = 12 therefore 1 + 2 = 3).
b. add all the single digits from 2a
c. add all the odd places from right to left in the card number
d. sum the results fro steps 2b and 2c
e. if the resulting number in 2c is divisible by 10, the card number is valid otherwise it is invalid.
The chapter is introducing methods so that is the main thing i will be using for each step.
how would i recieve the latitude and longitude from this xml
XmlTextReader reader = new XmlTextReader
("http://maps.googleapis.com/maps/api/geocode/json?address=" + postcode);
it should reurn the array
the php code is :
$url = 'http://maps.googleapis.com/maps/api/geocode/json?address=' . $search_code . '&sensor=false';
$json = json_decode(file_get_contents($url));
$lat = $json->results[0]->geometry->location->lat;
$lng = $json->results[0]->geometry->location->lng;
return array($lat,$lng);
I want to export the windows form in which text box,label and gridview ,gridview export to excel is working fine,but i need to export the whole form as such to excel.Is there any option to select Panel : This is my code:
private void btnExport_Click(object sender, EventArgs e)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "Excel Documents (*.xls)|*.xls";
[Code].....
I am using a windows application to start other processes. I am looking for a way to keep the form itself as the topmost program until it is closed, allowing the other programs enough load time.
View 1 Replies View RelatedI'm animating a human hand made in blender, so I allredy the hand, but I don't know how can I load this .obj to a windows form aplication that I'm working on. I need to load this .obj and animated .....
View 4 Replies View RelatedHow to use string variable in windows form application?
I'm using Microsoft Visual C++ 2010 Express And where to include libraries?
Alright, so I'm making a windows form with a few hundred buttons, and one button will change color based on data the program receives over a socket. This is what I have, and it kind of works, but I don't want to have to make another if statement for all 260 buttons.
void hitmiss(std::string u){
std::string^ ind = reccdata2();
if (u == "button6"){
if (ind == "1"){
this->button6->BackColor = System::Drawing::Color::Red;
this->textBox2->Text = L"hit";
[Code] .....
What I want to do is make it more like
void hitmiss(System::String^ u){
std::string^ ind = reccdata2();
if (ind == "1"){
this->u->BackColor = System::Drawing::Color::Red;
this->textBox2->Text = L"hit";
[Code] ....
But it returns the error that u is not a part of Form1.
I am trying to create a windows form that acts like a windows taskbar. So i found this on the web Link so i have tried using it.
But when i try and edit the form in the form designer in visual studio none of the changes i have made appear when i debug the form. It just appears as a blank grey box at the top of my screen. What am i doing wrong?
I want to load a file to rich text box component. I have this line:
richTextBox1->LoadFile("StudentaiRez.txt", RichTextBoxStreamType->PlainText);
But I get an error when I try to pass second parameter. It says : type name is not allowed.
I probably write it wrong, but I can't remember the correct way. In examples I only see that instead of -> dot is used, but it doesn't work either.
I need to apply theme file in windows form but I can't. When I use the code below I get error because there is no System.Windows.Application
StreamResourceInfo sri = System.Windows.Application.GetResourceStream(
new Uri("App.xaml", UriKind.Relative));
var resources = (System.Windows.ResourceDictionary)Load(sri.Stream); ;
var app = new System.Windows.Application();
app.Resources.MergedDictionaries.Add(resources);
I have to display google maps in a windows form. I managed to display the map in the form like this link: [URL] ...
But i have to display only the frame with the map in the form..not the whole page.
I'm building a Windows Form Application using MVP Design Pattern; the application is quite simple, it just calculates the sum of two number; So I have a form in which are located tree textbox: number1 number2 and result, plus a button to perform the action.
interface ICalcView {
string firstN { get; set; }
string firstN {get; set;}
string result { get; set; }
[Code] ....
Do you think that is a good base to start? Any code example to understand the execution flow and how to handle events?
I have a Windows form application which has database and will store user details. my problem is while executing program form is not displaying .
View 1 Replies View RelatedI need to be able to actually read my encrypted file..
I have the decryption code and works perfectly when running it through console app c++.
But, the way I decrypt is to decrypt from a file, and create a new file which is decrypted.
I can't use that kind of code in my program in windows form app c++..
I need to read the encrypted text file and decrypt it in memory while using it for my program..
Some links to my codes I use at the moment.
My decryption coded in console application: [URL] ....
My decryption code edited for form application (Did not do anything) [URL] ....
And this is the code I tried to read after it got decrypted (Reading file written in combobox_selectedindexchange: [URL] ....
i want to open image in windows from application but it's not showing the image. here is my code/////
using (OpenFileDialog dlg = new OpenFileDialog())
{
dlg.InitialDirectory = "c:";
dlg.Title = "Open Image";
[Code].....
I am wanting to separate the logic from the visual, but I'm having problems when calling the method that controls the actions of the progress bar timer.
Code:
ifndef PROGRESS_BAR
define PROGRESS_BAR
class Progress_bar{
public:
void set_Progress(ToolStripStatusLabel^ label,Timer^ time){
[Code] ....
The way that I'm calling this method on Form1.h
void set_Progress(toolStripStatusLabel1 ,timer1);
Errors:
Error1error C2182: 'set_Progress' : illegal use of type 'void'h:cry_devprogrammingc++school_mediaschool_mediaForm1.h277
Error2error C2078: too many initializersh:cry_devprogrammingc++school_mediaschool_mediaForm1.h277
Error3error C2440: 'initializing' : cannot convert from 'System::Windows::Forms::Timer ^' to 'int'h:cry_devprogrammingc++school_mediaschool_mediaForm1.h277