1 / 21

CST238 Week 3

CST238 Week 3. Questions / Concerns? Recap Check-off Take Home Lab#2 New topics PictureBox FlowLayoutPanel Menu Context Menu Status Bar Toolstrip Bitmap Dialogs (special dialogs – FileOpen , color) In-Class Exercise #3 Take Home Lab#3. Recap. Controls Buttons Textbox Label

madge
Download Presentation

CST238 Week 3

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. CST238 Week 3 • Questions / Concerns? • Recap • Check-off Take Home Lab#2 • New topics • PictureBox • FlowLayoutPanel • Menu • Context Menu • Status Bar • Toolstrip • Bitmap • Dialogs (special dialogs – FileOpen, color) • In-Class Exercise #3 • Take Home Lab#3

  2. Recap • Controls • Buttons • Textbox • Label • Events • Click (button) • Keyboard events (KeyDown, KeyPress, KeyUp) • Form level events (Load) • Layout control – organize controls • TableLayoutControl

  3. Take Home Lab 2 • Calculator • Process keyboard events • Table layout control for keys • Manage states • First operand (example: 135) • Operator (+) • Second operand (23)

  4. State Diagram Start EnterNumber1 Enter a Digit (0..9, .) Textbox (0) Operand1(0) Operand2(0) Operator(“”) Enter a Digit (0..9, .) Textbox (+d) Operand1(0) Operand2(0) Operator(“”) Enter a digit , Textbox(0) Enter = Enter an operator Result Textbox (num2->result) Operand1(result) Operand2(0) Operator(“”) EnterNumber2 Enter an operator Operator Enter = Textbox (0+d) Operand1(num) Operand2(0) Operator(“op”) Textbox (num) Operand1(num) Operand2(0) Operator(“op”) Enter a Digit (0..9, .) Enter an operator Enter = Operand2 = num

  5. PictureBox Control • Two ways to load a picture: • Load method • Image property • Properties • SizeMode (Normal, StretchImage, etc.) • BorderStyle • Anchor/Dock

  6. Simple Picture Loader/Viewer

  7. Simple Picture Loader/Viewer with Menu

  8. MenuStrip & Toolstrip Control • Download images from Visual Studio Image Library • http://www.microsoft.com/en-us/download/details.aspx?id=35825 • Add a Toolstrip to the form

  9. Status Bar & Context Menu • Add a status bar at the bottom to show filename • Add a context menu to stretch the image

  10. Using Properties.Resources • Add images to the Resources • Faster loading time • Increase the size of executable

  11. Example 2

  12. Use layout controls TableLayoutControl FlowLayoutControl

  13. FlowLayoutControl • Allow one control to flow into another control. • Useful when you need to have multiple controls.

  14. Dialog • Forms that: • Provide information to the user, or • Request information from the user • Generally modal • Cannot switch forms until dialog is closed. • Several dialogs included with Windows Forms • MessageBox, Color, OpenFile, SaveFile, Print, etc. • You can create your own custom dialog

  15. Working with Dialogs • Simple Dialogs • Just a function call • MessageBox.Show() • Common/Custom Dialog • Create instance of dialog • Set properites • Show dialog using ShowDialog method • Returns a meber of the DialogResult enumeration • Take action based on dialog result

  16. Working with Dialog OpenFieDialog openFile1 = new OpenFileDialog(); openFile1.Filter = “JPEG Files (*.jpg)|*.jpg|PNG Files (*.png)|*.png|BMP Files (*.bmp)|*.bmp|All files (*.*)|*.*”; if (openFile1.ShowDialog() == DialogResults.OK) { //Do something with OpenFile1.FileName //which is the filename selected by the user if (openFile1.ShowDialog() == DialogResult.OK) { pictureBox1.Load(openFile1.FileName); } }

  17. Working with Color Dialog ColorDialog colorDialog1 = new ColorDialog(); if (colorDialog1.ShowDialog() == DialogResult.OK) pictureBox1.BackColor = colorDialog1.Color; //selected color

  18. Custom Dialog • Create form as you would any other • Set form properties to add dialog look, feel and behavior • Set FormBorderStyle to FixedDialog • Disables resizing of dialog • Set ControlBox property to false • Removes minimize, maximize and close buttons from title bar • Set AcceptButton and CancelButton properties • AcceptButton - pressing Enter is the same as clicking the button • CancelButton – pressing Escape is the same as clicking the button • Set dialog return value on button clicks • In event handler, or • Using the DialogResult property of the button

  19. Example 1

  20. In-Class Lab#3 • Modify the second picture viewer • Add menu for Show, Close, Clear Picture & Background color • Add Toolstrip for these actions. • Add multiple pictures to the resources • Create an array of images • Create an array of caption • Add a Status bar to show the caption of the picture • Add context-menu to flip through pictures

  21. Take-Home Exercise #3 • Flag Quiz • Find some flag images and add them to resources (at least 10 images) • Create an array of images • Create an array of country names • Create an array of correct answers • Keep track of their scores

More Related