I've been trying to add an icon to an app indicator menu with no success, and I've been using GtkMenu.
I found some code that referenced GMenu and used g_menu_set_icon to display an icon next to the menu label.
What is the difference between these two sets of menu's? Should one be used in favor of the other? GMenu appears to be more full featured, but if I'm supposed to use GtkMenu how would I display an icon?
I have tried this which didn't work. It showed the label text but not the icon.
GtkWidget* NewMenuItemWithIcon(const char* name)
{
GtkWidget *box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 6);
GtkWidget *icon = gtk_image_new_from_icon_name("status", GTK_ICON_SIZE_MENU);
GtkWidget *label = gtk_label_new(name);
GtkWidget *menu_item = gtk_menu_item_new();
gtk_container_add(GTK_CONTAINER(box), icon);
gtk_container_add(GTK_CONTAINER(box), label);
gtk_container_add(GTK_CONTAINER(menu_item), box);
return menu_item;
}
Update:
It would seem that GMenu doesn't inherit from GtkWidget. So it's a different kind of menu. However, app_indicator_set_menu expects a GtkMenu not a GMenu so the correct menu to use is GtkMenu.
However, the issue of icons remains. I was able to get it working with the deprecated api gtk_image_menu_item
But it's deprecated. So ideally I shouldn't use it. The code above comes directly from api docs. Claiming to be equivalent, it doesn't seem to work.
Related
I have this CTaskDialog that I am working on:
The code is as follows:
CTaskDialog dlg(_T("How would you like to download the data?"),
_T("Download Schedule Information"),
_T("Meeting Schedule Assistant"), TDCBF_OK_BUTTON | TDCBF_CANCEL_BUTTON);
dlg.SetMainIcon(TD_INFORMATION_ICON);
dlg.SetFooterIcon(TD_INFORMATION_ICON);
dlg.SetFooterText(_T("All assignments for the selected weeks will be reset."));
dlg.AddRadioButton(44444, _T("Download data for all weeks"));
dlg.AddRadioButton(44445, _T("Download data for selected week"));
dlg.AddRadioButton(44446, _T("Download data for selected week and all additional weeks"));
// Set Width in dialog units (40% screen width)
int iPixelWidth = (::GetSystemMetrics(SM_CXSCREEN) / 100) * 40;
int iDialogUnitsWidth = MulDiv(iPixelWidth, 4, LOWORD(GetDialogBaseUnits()));
dlg.SetDialogWidth(iDialogUnitsWidth);
if(dlg.DoModal() == IDOK)
{
auto iSelection = dlg.GetSelectedRadioButtonID();
}
Is it possible to set the main icon as a question? I can only see these defines in the source:
#define TD_WARNING_ICON MAKEINTRESOURCEW(-1)
#define TD_ERROR_ICON MAKEINTRESOURCEW(-2)
#define TD_INFORMATION_ICON MAKEINTRESOURCEW(-3)
#define TD_SHIELD_ICON MAKEINTRESOURCEW(-4)
The SetMainIcon member function is what you're looking for. Like most functions that deal with Win32 resources, it has two overloads:
void SetMainIcon(
HICON hMainIcon
);
void SetMainIcon(
LPCWSTR lpszMainIcon
);
The first takes a handle to an icon resource (HICON), while the second takes a string identifying a resource from which an icon resource can be loaded.
If you want to set the task dialog to display your application's icon, then you can simply pass in the appropriate HICON. You can also use a custom icon loaded from your application's resources.
I'm not entirely sure, but I think what you're asking is how to use a question-mark icon. Note first that the use of such icons in message boxes has been deprecated since Windows 95, and Microsoft strongly discourages their use. It is recommended that you only use them to denote entry points to online help. Quoting from the Standard Icons section of the official Win32 style guide:
Question mark icons
Use the question mark icon only for Help entry points. For more information, see the Help entry point guidelines.
Don't use the question mark icon to ask questions. Again, use the question mark icon only for Help entry points. There is no need to ask questions using the question mark icon anyway it's sufficient to present a main instruction as a question.
Don't routinely replace question mark icons with warning icons. Replace a question mark icon with a warning icon only if the question has significant consequences. Otherwise, use no icon.
So, this is why there's no standard question mark icon defined. These TD_*_ICON defines are straight from the Win32 headers for the Task Dialog (they're the same ones you'd use with the TASKDIALOGCONFIG structure), not part of the MFC wrapper class.
If you absolutely must use this icon, the workaround is as follows:
const HICON hiconQuestion = AfxGetApp()->LoadStandardIcon(IDI_QUESTION);
dlg.SetMainIcon(hiconQuestion);
(Note that the same HICON could be passed to the CTaskDialog's SetFooterIcon member function.)
How to define a system theme to be applied that matches the new style and apply it. Please find the attached image for the actual and expected style.
MDI Frame window color:
The following approaches i have tried so far, it was not yielded expected result.
1: Setting Application caption using Windows API The following code sets the color for application title bar for the session. But with theme settings and such on Windows 8.1 and 10, it does not come into effect.
int aElement = COLOR_ACTIVECAPTION;
DWORD aOldColor;
DWORD aNewColor;
aOldColor = GetSysColor(aElement);
aNewColor = RGB(0x04, 0x04, 0x04);
SetSysColors(1, &aElement, &aNewColor);
2: Using theme/DWM API
With a Windows theme in effect, changing the application title bar alone does not become successful. Have tried:
2-a: Getting theme handle, defining a captionbar and using the captionbar in a call to CMFCVisualManager::GetInstance()->OnDrawCaptionBarBorder()
2-b: DwmSetWindowAttribute() was used for setting rendering policy disabled.
3: Using CMFCVisualManager
Defining a CMFCCaptionBar and assigning it to CMFCVisualManager. This too does not get the effect needed.
I am new to the forum and to programming so hopefully I give you enough details and precise information needed to understand my question.
I am working with vaadin 7 in java EE web aplication and I have a layout problem/phanomena that I cannot explain and I could not find a solution on the net. Basically, when I start the server and test my application on localhost everything looks right. When I open a dialogue window and close it again, the layout of the site looks displaced. I could not find a pattern as to which click causes this effect. Sometimes it happens also when I only change a view. This is how it should look like and this is how it does look like after working in the application.
I looked through the devloper tool in the browser and noticed that in the working html, the attributes "top" and "left" are set for the gridlayout-slot. In the displaced layout these attributes are not set. Furthermore, it seems that the problem occurs more often in chrome. It does also happen in firefox but less often.
I use VerticalLayout, GridLayout and FormLayout.
Did you have similar experience? I am wondering how and when the html files are generated from the vaadin code to find out why they change and how I can fix it.
I am not sure which code exactly is causing the problem, so I am not sure what to post. If you have an idea where to look, I can add more code. Here is how the Dialog is set up:
public class Dialog extends Window implements ClickListener
public Dialog(CustomController controller, String title)
{
super(title);
setModal(true);
setStyleName("dialogWindow");
this.controller = controller;
setWidth("65.0%");
setHeight("90.0%");
// top level component properties
panLayout = new GridLayout();
panLayout.setWidth("100%");
panLayout.setHeight("100%");
buildPanToolbar();
panLayout.addComponent(panToolbar);
buildPanTop();
panLayout.addComponent(panTop);
buildPanTabs();
panLayout.addComponent(tabsheet);
panLayout.setComponentAlignment(tabsheet, Alignment.MIDDLE_CENTER);
panLayout.setRowExpandRatio(2, 1.0f);
tfThema.focus();
setContent(panLayout);
}
The buildSomething() functions are all a combination of GridLayout, FormLayout, HorizontalLayout and VerticalLayout. Below is the buildPanToolbar() function as an example
private void buildPanToolbar()
{
panToolbar = new HorizontalLayout();
panToolbar.setImmediate(false);
panToolbar.setWidth("100%");
panToolbar.setHeight("25px");
panToolbar.setMargin(false);
panToolbar.setSpacing(true);
panToolbar.setStyleName("toolbar");
HorizontalLayout panHelpToolbar = new HorizontalLayout();
panHelpToolbar.setImmediate(false);
panHelpToolbar.setWidth("-1px");
panHelpToolbar.setHeight("25px");
panHelpToolbar.setMargin(false);
panHelpToolbar.setSpacing(true);
panHelpToolbar.setStyleName("toolbarButtons");
panToolbar.addComponent(panHelpToolbar);
pbButton1 = new Button();
pbButton1.setCaption("Button1Text");
pbButton1.setStyleName(BaseTheme.BUTTON_LINK);
pbButton1.setImmediate(true);
pbButton1.setWidth("100px");
pbButton1.setHeight("-1px");
pbButton1.setIcon(new ThemeResource("../images/pic1.gif"));
pbButton1.addClickListener(controller);
panHelpToolbar.addComponent(pbButton1);
panHelpToolbar.setComponentAlignment(pbButton1, Alignment.MIDDLE_LEFT);
pbButton2= new Button();
pbButton2.setCaption("Button2 Text");
pbButton2.setImmediate(true);
pbButton2.setWidth("100%");
pbButton2.setHeight("-1px");
pbButton2.setStyleName(BaseTheme.BUTTON_LINK);
pbButton2.setIcon(new ThemeResource("../images/pic.gif"));
pbButton2.addClickListener(this);
panHelpToolbar.addComponent(pbButton2);
panHelpToolbar.setComponentAlignment(pbButton2, Alignment.MIDDLE_LEFT);
}
I'm trying to implement an Editor with hint text functionality for a Xamarin.Forms project. This is trivial in Android, because the underlying EntryEditText control has a Hint property. In iOS, the implementation is a bit more complex because the UITextView class does not implement hint text.
I don't like the technique, "set text to the placeholder, clear it if typing starts, return it if typing ends and the text is blank". It means I have to do extra work to tell if the control's blank, and there's a lot of fiddling with the text color involved. But I've been having so much trouble I'm going to have to resort to it. Maybe someone can help me with this.
I started with the answer to Placeholder in UITextView. I started a new Xamarin iOS project and stumbled through a rough Obj-C to C# conversion, and it worked great with a minor change: the Font property of the UITextView isn't initialized yet in the constructor, so I had to override AwakeFromNib() to set the placeholder label's font. I tested it and it worked, so I brought that file into a Xamarin Forms project, and things started getting a little nutty.
The first problem is it turns out apparently MonoTouch has some slight API differences in Xamarin Forms, such as using some types like RectangleF instead of CGRect. This was obvious, if not unexpected. I've been wrestling with some other differences for the past few days, and can't seem to overcome them in a way that makes me happy. Here's my file, trimmed down significantly because I've been trying all kinds of debugging things:
using System;
using MonoTouch.UIKit;
using MonoTouch.Foundation;
using MonoTouch.CoreGraphics;
using System.Drawing;
namespace TestCustomRenderer.iOS {
public class PlaceholderTextView : UITextView {
private UILabel _placeholderLabel;
private NSObject _notificationToken;
private const double UI_PLACEHOLDER_TEXT_CHANGED_ANIMATION_DURATION = 0.25;
private string _placeholder;
public string Placeholder {
get {
return _placeholder;
}
set {
_placeholder = value;
if (_placeholderLabel != null) {
_placeholderLabel.Text = _placeholder;
}
}
}
public PlaceholderTextView() : base(RectangleF.Empty) {
Initialize();
}
private void Initialize() {
_notificationToken = NSNotificationCenter.DefaultCenter.AddObserver(TextDidChangeNotification, HandleTextChanged);
_placeholderLabel = new UILabel(new RectangleF(8, 8, this.Bounds.Size.Width - 16, 25)) {
LineBreakMode = UILineBreakMode.WordWrap,
Lines = 1,
BackgroundColor = UIColor.Green,
TextColor = UIColor.Gray,
Alpha = 1.0f,
Text = Placeholder
};
AddSubview(_placeholderLabel);
_placeholderLabel.SizeToFit();
SendSubviewToBack(_placeholderLabel);
}
public override void DrawRect(RectangleF area, UIViewPrintFormatter formatter) {
base.DrawRect(area, formatter);
if (Text.Length == 0 && Placeholder.Length > 0) {
_placeholderLabel.Alpha = 1;
}
}
private void HandleTextChanged(NSNotification notification) {
if (Placeholder.Length == 0) {
return;
}
UIView.Animate(UI_PLACEHOLDER_TEXT_CHANGED_ANIMATION_DURATION, () => {
if (Text.Length == 0) {
_placeholderLabel.Alpha = 1;
} else {
_placeholderLabel.Alpha = 0;
}
});
}
public override void AwakeFromNib() {
base.AwakeFromNib();
_placeholderLabel.Font = this.Font;
}
protected override void Dispose(bool disposing) {
base.Dispose(disposing);
if (disposing) {
NSNotificationCenter.DefaultCenter.RemoveObserver(_notificationToken);
_placeholderLabel.Dispose();
}
}
}
}
A notable change here is relocation of the label's initialization from DrawRect() to the constructor. As far as I can tell, Xamarin never lets DrawRect() be called. You'll also note I'm not setting the Font property. It turned out in the iOS MonoTouch project, sometimes the parent's font was null and it's illegal to set the label's font to null as well. It seems at some point after construction Xamarin sets the font, so it's safe to set that property in AwakeFromNib().
I wrote a quick Editor-derived class and a custom renderer so Xamarin Forms could render the control, the Renderer is slightly of note because I derived from NativeRenderer instead of EditorRenderer. I needed to call SetNativeControl() from an overridden OnModelSet(), but peeking at the assembly viewer showed that EditorRenderer makes some private calls I'll have to re-implement in mine. Boo. Not posted because this is already huge, but I can edit it in if needed.
The code above is notable because the placeholder isn't visible at all. It looks like in iOS-oriented MonoTouch, you typically initialize a control with a frame, and resizing is a rare enough circumstance you can assume it doesn't happen. In Xamarin Forms, layout is performed by layout containers, so a constructor-provided frame is irrelevant. However, the size of the label is intended to be set in the constructor, so it ends up having negative width. Whoops.
I assumed this could be solved by moving instantiation of the label into AwakeFromNib(), or at least sizing it there. This is when I discovered that for some reason, AwakeFromNib() isn't called in the control. Welp. I tried to find an equivalent callback/event that happened late enough for the bounds to be set, but couldn't find anything on the iOS side. After trying many, many things, I noticed the custom renderer received property change events for the Xamarin Forms Model side of this mess. So, if I listen for Height/Width change events, I can then call a method on the label to give it a reasonable size based on the current control. That exposed another problem.
I cannot find a way to set the label's font to match the UITextView's font. In the constructor, the Font property is null. This is true in both the iOS and Xamarin Forms project. In the iOS project, by the time AwakeFromNib() is called, the property is initialized and all is well. In the XF project, it's never called, and even when I pull stunts like invoking a method from a 5-second delayed Task (to ensure the control is displayed), the property remains null.
Logic and iOS documentation dictates the default value for the font should be 17-point Helvetica. This is true for the placeholder label if I fudge the size so it's visible. It is not true for the UITextView control, though since it reports its font as null I'm unable to see what the font actually is. If I manually set it all is well, of course, but I'd like to be able to handle the default case. This seems like a bug; the box seems to be lying about its font. I have a feeling it's related to whatever reason the Xamarin.Forms.Editor class doesn't have a Font property.
So I'm looking for the answer to two questions:
If I'm extending an iOS control in XF to add a subview, what is the best way to handle sizing that subview? I've found Height/Width changes raise events in the renderer, is this the only available way?
When the property has not been set by a user, is the Font of a UITextView in Xamarin Forms ever set to a non-null value? I can live with a requirement that this control requires the font to be explicitly set, but it's yucky and I'd like to avoid it.
I'm hoping I've missed something obvious because I started barking up the wrong trees.
If I'm extending an iOS control in XF to add a subview, what is the
best way to handle sizing that subview? I've found Height/Width
changes raise events in the renderer, is this the only available way?
This is the only way I know of since the exposed elements of the renderer are so limited.
When the property has not been set by a user, is the Font of a
UITextView in Xamarin Forms ever set to a non-null value? I can live
with a requirement that this control requires the font to be
explicitly set, but it's yucky and I'd like to avoid it.
No, the Font is not assigned a default non-null value.
I have an application in Visual c++ (Win32 API). In my application the main window boarder is displayed in old windows styled. I have tried changing the wndWc.style values to WS_OVERLAPPED,WS_POPUP and other which are given in WinUser.h but there is no change in the appearance of the main window were as all my pop-up window are displayed in windows 7 style how this can be rectified. Any help in this regards will be highly appreciated. I have attached both the images the main window and the pop up window.
Code :
// our window class
WNDCLASS wndWc;
// ---------------------------------------------------------
// fill window class members
// ---------------------------------------------------------
wndWc.style = CS_GLOBALCLASS;
wndWc.lpfnWndProc = (WNDPROC) WndProc;
wndWc.cbClsExtra = 0;
wndWc.cbWndExtra = 0;
wndWc.hInstance = GetModuleHandle(NULL);
wndWc.hIcon = NULL;
wndWc.hCursor = LoadCursor(0, IDC_ARROW);
wndWc.hbrBackground = (HBRUSH)GetStockObject(0);
wndWc.lpszMenuName = NULL;
wndWc.lpszClassName = "XYZ";
// register class
if (!RegisterClass(&wndWc)) return false;
// ---------------------------------------------------------
// get actual screen resolution
int iSw = (WORD)GetSystemMetrics(SM_CXSCREEN); // height
int iSh = (WORD)GetSystemMetrics(SM_CYSCREEN); // height
// make a rectangle on the center of the screen
RECT rc = {(iSw - iWidth)/2, (iSh - iHeight)/2, width, height};
// create the window. the spaces on the window title
// are just to make sure this will be visible when the region
// is active. just run the app and you'll understand. =)
hWnd = CreateWindow("XYZ", "XYZ",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,CW_USEDEFAULT, width,height,
NULL, NULL, GetModuleHandle(NULL), NULL);
It could be that your EXE has been flagged to run in compatibility mode for a previous OS version. Right-click the EXE, choose Properties, then ensure everything is switched off on the Compatibility tab. (Especially "Disable visual themes" and "run this program in compatibility mode for...")
Failing that...
It's unusual to need to do anything at all, but try this at the start of the app:
SetThemeAppProperties(STAP_ALLOW_NONCLIENT|STAP_ALLOW_CONTROLS)
If that doesn't work, try explicitly setting the theme for your window:
SetWindowTheme(hWnd, "WINDOW", NULL);
FWIW, I pasted your code in to a new Visual Studio 2008 project created using the "Win32 project" wizard, and it came out with a Windows 7 border. You usually have to go out of your way not to get the border, in fact.
There could be something unusual about the EXE you are building, like a flag in the EXE's header being set incorrectly. e.g. If it isn't specifying that it is a Windows GUI app, or maybe there are some version fields...
The EXE's manifest may also play a part, but I just tried deleting the manifest completely and my program still got a themed window, so it's probably not that.
If you look closely, you'll see that it's not just the border. The close button also uses the old visual style. Therefore, it's not sufficient that you change the window style. You must indicate that your app is Vista- and Aero-aware