Delphi Numeric Edit Box Images

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TCEdit is an edit box for entering timcode, as used in film, TV, MIDI sequencers, show control systems etc. It restricts user input to Hours, Minutes, Seconds and Frames, and returns both a formatted string as well as the timecode converted to miliseconds. Web resources about - how to limit Tedit input to numeric - embarcadero.delphi.firemonkey Numeric keypad - Wikipedia, the free encyclopedia A numeric keypad, numpad or tenkey, is the small, palm-sized, seventeen key section of a computer keyboard, usually on the very far right.

The Windows Ribbon Framework uses a strict separation between presentation and command logic. This is somewhat similar to how you can separate presentation (Controls) and actions (TActionList and TAction components) in Delphi. The Ribbon Framework takes this a step further: you must specify commands for every action a user can take.

Like Actions in Delphi, Commands can be used by multiple Ribbon controls. For example, in WordPad, the Paste command is used in multiple places:

  • On the ribbon, when the top part of the big Paste button is clicked.
  • On the ribbon, when the bottom part of the bit Paste button is clicked, and the Paste menu option is selected.
  • On the popup menu that appears when you right-click inside the document.

This allows you to reuse the same command in multiple places. In contrast to Actions in Delphi however, you cannot specify captions or images for ribbon controls directly. All captions, images and hints are specified at the Command level. You link commands to one or more ribbon controls to make those captions and images appear on the ribbon.###Adding and Deleting Commands

Using the Commands toolbar in the Ribbon Designer, you can add and delete commands as well as reorder them:

You can also use the right-click menu or keyboard shortcuts (Shift+Ctrl+Ins, Ctrl+Del, Ctrl+Up and Ctrl+Down). When you delete a command, and one or more controls use this command, you will get a warning. Deleting the command will make those controls unusable.

Command Properties

Each command has the following properties:

  • Name: each command must have a unique name, which must be a valid Pascal identifier. This name is later used to connect the command to an equally named VCL action, unless you specify a value for Symbol (see below).
  • Caption: this is the caption of the command as it will appear on the ribbon or context popups. You can optionally specify an ID and Symbol for the caption. The ID will be a numeric identifier for the string resource for this caption in the resource file. Similarly, the Symbol will be the name of the constant used for this identifier. For Delphi applications, you usually don't need to specify these values and you can leave them empty.
  • Description: a longer description of the command. This description is only used when the command is used in the right side of the application menu:


In this example, the Caption of the highlighted command on the right is '&Rich Text document', and the Description is 'Save the document in the Rich Text format.'.

  • Tooltip Title: the title of the tooltip (hint) that appear when the user hovers the mouse over the command. This title is displayed in bold at the top of the tooltip:

  • Tooltip Description: the description of the tooltip as it appears below the title.

  • Keytip: the keytip or key sequence that is used to access the command using the Alt key. This keytip appears when the user presses the Alt key to navigate the ribbon:

The Ribbon Framework will automatically apply keytips to every command. However, if you want more control over the keytips used, you can specify them yourself. A keytip is not limited to a single character.

  • Symbol: the name of the Delphi action to that this command will be mapped. If you do not specify this, the Name property will be used.
  • Comment: this comment is placed in the Pascal file after the constant for this command. It is used for no other purposes.

Command Images

You can specify up to 4 sets of images for each command. You can specify images for when to command is displayed in Small or in Large mode (for example, as a Small or a Large button on the ribbon). You can also specify additional images for when the Windows is running in High-Contrast mode (again both Small and Large images).

Each image should be a 32-bit BMP image containing an Alpha channel. The Alpha channel is used to make parts of the image partially transparent, for example around the edges or when the image contains a slight shadow. Unfortunately, a lot of image editing applications don't allow you to save images as 32-bit BMP files with Alpha channel. Fortunately, you can use the Ribbon Designer to load PNG files with Alpha channels. Most image editing applications will support this format. The Ribbon Designer will automatically convert the image to a 32-bit BMP file.

Every command should have at least one small and one large image (unless the command is only ever displayed in Large or in Small mode, in which case you can omit one of the images). The small image should be 16x16 pixels in size, and the large image should be 32x32 pixels in size. These images are used when Windows is running at the standard screen resolution of 96 dpi (dots per inch). When a user increases the screen resolution in Windows, these images will be scaled up, which can result in blurry edges and lower quality:

96 dpi144 dpi (150%)

To improve the quality at higher dpi settings, you can specify additional images for each command for different dpi settings. Common dpi settings are 96 dpi (default), 120 dpi (125%), 144 dpi (150%) and 192 dpi (200%). The image sizes for small and large images for these resolutions are:

DPISmall ImageLarge Image
96 dpi16x16 pixels32x32 pixels
120 dpi20x20 pixels40x40 pixels
144 dpi24x24 pixels48x48 pixels
192 dpi32x32 pixels64x64 pixels

The WordPad template uses additional images for all these resolutions. As a result, the ribbon images will look better (sharper) in higher resolutions:

144 dpi with scaling144 dpi with additional images

Important: the ribbon will only show the higher resolution images if your Delphi application is High-DPI aware. By default, Delphi applications are not DPI aware. To make them DPI aware, you need to modify the application manifest. The easiest way to do this with the Ribbon Framework for Delphi is like this:

  • In Delphi, go to 'Project Options'.
  • Go the the Application page.
  • Uncheck 'Enable runtime themes'. Don't worry, your application will still be theme-aware because we will use a custom manifest.
  • Choose 'Project Add to project..'.
  • In the File Open dialog box, choose the 'Resource file (*.rc)' file type.
  • Open the file 'UIRibbon.rc' in the Lib directory of the Ribbon Framework.

Now, when you build you Delphi project, it will be DPI aware and will look better at higher resolutions.

For more information about image guidelines, see the MSDN documentation.###Specifying Images

For each set of images (Small, Large, High-Contrast), the designer shows the following frame:

You can add, delete and edit the image properties here. When you add an image, you can specify a BMP or PNG file. These should be 32-bit image files with an Alpha channel. The Ribbon Designer will automatically convert a PNG file to a 32-bit BMP file. When you open a file that is not located inside your Ribbon project directory, it will be copied to a 'Res' subdirectory under the Ribbon project directory.

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Each image has the following properties, which you can open by double-clicking the image or clicking the 'Edit' button:

  • Image File: the name of the image file, relative to the project directory.
  • Minimum target resolution: one of the 4 target resolutions mentioned above, or 'auto' for the default resolution.
  • ID: an optional ID used to store this image in the resource file. You will usually leave this 0.
  • Symbol: the name of the Pascal constant to generate for this image. You usually don't care about this, so leave it empty.

Specifying multiple images for different resolutions can become a bit tedious. That's why the Add button also has a drop-down menu that lets you add multiple images at once:

The will open the File Open dialog box again, but you can select multiple image files now. For Small Images, these should be 16x16, 20x20, 24x24 or 32x32 pixels in size. For Large Images, these should be 32x32, 40x40, 48x48 or 64x64 pixels in size. The Ribbon Designer will automatically set the 'Minimum target resolution' of each image, based on the image dimensions.###Some Tips

We finish this section with some tips:

Delphi numeric edit box images clip art
  • You should create a Command for everything you'll see on the ribbon. This includes:
    • Ribbon tabs.
    • Ribbon groups (a group of controls like the 'Clipboard' group in the pictures above).
    • Ribbon controls (buttons, menu items, check boxes, combo boxes, font controls, color pickers etc.).
    • The application menu.
    • The 'Recent items' part of the application menu.
    • The menu options shown in the application menu.
    • The Quick Access Toolbar.
    • The Help button at the right of the ribbon.
    • Popup and context menu options.
    • etc..
  • You should also specify small images for ribbon groups. These will be shown when the user reduces the width of the ribbon and the group collapses into a popup:
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Controls are objects that users can interact with to enter or manipulate data. They commonly appear in dialog boxes or on toolbars. This topic family covers three main kinds of controls:

  • Windows common controls, including owner-drawn controls

  • ActiveX Controls

  • Other control classes supplied by the Microsoft Foundation Class Library (MFC)

Windows Common Controls

The Windows operating system has always provided a number of Windows common controls. These control objects are programmable, and the Visual C++ dialog editor supports adding them to your dialog boxes. The Microsoft Foundation Class Library (MFC) supplies classes that encapsulate each of these controls, as shown in the table Windows Common Controls and MFC Classes. (Some items in the table have related topics that describe them further. For controls that lack topics, see the documentation for the MFC class.)

Class CWnd is the base class of all window classes, including all of the control classes.

ActiveX Controls

ActiveX controls, formerly known as OLE controls, can be used in dialog boxes in your applications for Windows, or in HTML pages on the World Wide Web. For more information, see MFC ActiveX Controls.

Other MFC Control Classes

In addition to classes that encapsulate all of the Windows common controls and that support programming your own ActiveX controls (or using ActiveX controls supplied by others), MFC supplies the following control classes of its own:

Finding Information About Windows Common Controls

The table below briefly describes each of the Windows common controls, including the control's MFC wrapper class.

Windows Common Controls and MFC Classes

ControlMFC classDescriptionNew in Windows 95
animationCAnimateCtrlDisplays successive frames of an AVI video clipYes
buttonCButtonPushbuttons that cause an action; also used for check boxes, radio buttons, and group boxesNo
combo boxCComboBoxCombination of an edit box and a list boxNo
date and time pickerCDateTimeCtrlAllows the user to choose a specific date or time valueYes
edit boxCEditBoxes for entering textNo
extended combo boxCComboBoxExA combo box control with the ability to display imagesYes
headerCHeaderCtrlButton that appears above a column of text; controls width of text displayedYes
hotkeyCHotKeyCtrlWindow that enables user to create a 'hot key' to perform an action quicklyYes
image listCImageListCollection of images used to manage large sets of icons or bitmaps (image list isn't really a control; it supports lists used by other controls)Yes
listCListCtrlWindow that displays a list of text with iconsYes
list boxCListBoxBox that contains a list of stringsNo
month calendarCMonthCalCtrlControl that displays date informationYes
progressCProgressCtrlWindow that indicates progress of a long operationYes
rebarCRebarCtrlTool bar that can contain additional child windows in the form of controlsYes
rich editCRichEditCtrlWindow in which user can edit with character and paragraph formatting (see Classes Related to Rich Edit Controls)Yes
scroll barCScrollBarScroll bar used as a control inside a dialog box (not on a window)No
sliderCSliderCtrlWindow containing a slider control with optional tick marksYes
spin buttonCSpinButtonCtrlPair of arrow buttons user can click to increment or decrement a valueYes
static-textCStaticText for labeling other controlsNo
status barCStatusBarCtrlWindow for displaying status information, similar to MFC class CStatusBarYes
tabCTabCtrlAnalogous to the dividers in a notebook; used in 'tab dialog boxes' or property sheetsYes
toolbarCToolBarCtrlWindow with command-generating buttons, similar to MFC class CToolBarYes
tool tipCToolTipCtrlSmall pop-up window that describes purpose of a toolbar button or other toolYes
treeCTreeCtrlWindow that displays a hierarchical list of itemsYes

What do you want to know more about

  • An individual control: see the table Windows Common Controls and MFC Classes in this topic for links to all controls

  • Add common controls to a dialog box.

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For information about Windows common controls in the Windows SDK, see Common Controls.

See also

User Interface Elements
Dialog Editor