I'm writing a small application in Windows using win32(vc++) and I want to create a different view based on the position of the taskbar. How can I check the position of taskbar in code like any api?
You can use the SHAppBarMessage() function with the ABM_GETTASKBARPOS message.
The taskbar may be displayed on multiple displays so in general it's not possible to retrieve a single rect that defines it's position. It may occupy discontiguous space.
Use EnumDisplayMonitors to enumerate the attached displays. Then for each display use GetMonitorInfo to obtain bounding and work area rectangles for the display. If there's a difference, then that difference is (usually) due to the taskbar. Remember that the taskbar can appear on multiple displays.
I say usually because you might have applications with app bars that reduce the working area. But I'm guessing that what you really want to do is display your program so that it does not overlap with the taskbar, and if you want to avoid overlapping the taskbar then you'll likely want to avoid overlapping app bars too.
Related
I am trying to capture windows hidden behind my application. I am using windows 7 and VC++. I have tried printwindow() function which draws the both non-client and client area of hidden window, but captured window in the device context doesn't show desktop composition effects(aero effects). Instead it shows the captured window with windows 7 basic theme.
I have also tried with GetWindowDC() to retrive the DC of hidden window, and then Bitblt() it to memory DC but the captured window doesn't show non-client area (caption, close button, minimize button etc) correctly.
Anybody faced this issue?
Please help.
Click the link below. It leads to a MSDN site that lists all the existing Windows Functions ever of all history since Windows 95 up to Windows 8 (from period where Microsoft started Windows until present). It shows old windows functions of first Windows and new windows functions added for the new windows.
http://msdn.microsoft.com/en-us/library/windows/desktop/ff468919(v=vs.85).aspx
Anyway follow this site.
You will see the name of each function as a link.
Click any of them that you are interested.
Each link there leads to another MSDN site that explains all the basics knowledge that you must know about the function before using it, that you want to learn more. What that function does, its purpose, all its parameters and how to use each one, all their flags, all parameters types, return value and at last remarks section that shed more light and sometimes gives tips about the selected function.
Of course, you don't have to read all of them. Find in the list only the necessary functions to fit your needs. The functions that will solve your problem and answer your question that you posted.
By the way, I read your post, and I think that I found in the list the necessary functions that will do what you want to do, I will list them below, and say in one sentence what each does for what you need:
AnimateWindow - Enables you to produce special effects when showing or hiding windows. There are four types of animation: roll, slide, collapse or expand, and alpha-blended fade.
FlashWindow - Flashes the specified window one time. It does not change the active state of the window.
FlashWindowEx - Flashes the specified window specified number of times. It does not change the active state of the window.
Use these functions to achieve the aero effects that you want.
SetWindowPos - Changes the size, position, and Z order of a child, pop-up, or top-level window. These windows are ordered according to their appearance on the screen. The topmost window receives the highest rank and is the first window in the Z order.
Use this function to show the hidden windows on the top side (above all other windows) and on the screen front of you. The operating system will automatically draw the both non-client and client area of these windows without using any gdi, draw and paint functions yourself.
If you want these windows to return back to their previous state (where they were hidden), then save their state with GetWindowPlacement function and later call SetWindowPlacement to bring them back to their hidden state. You can try GetWindowRect and SetWindowPos instead to achieve the same goal.
I also think that you will be interested in GetWindowTheme and SetWindowTheme functions and all the draw theme functions (BackgroundEx, Edge, Icon, Text, TextEx).
There are more theme functions. Find in msdn and in other sites on the web.
It is possible to use the SetWindowPos API on Windows to keep a windows always on top of other windows, and there are many questions on StackOverflow dealing with this.
It is possible to keep only part of a Window always visible? I.e. specify a clipping region inside an existing window, and keep only that part visible?
A use case would be the following (on Windows):
User clicks on icon to run app.
User highlights a portion of the screen to focus on (similar to the Snipping Tool on Windows 7)
The highlighted part of the screen remains always visible, even when other windows/programs are moved over the selected region.
I know the issues that would spring up with having other applications that are also set to being topmost. Just curious if this is even possible?
Even if you change part of your window to be transparent to what's below (with a clipping region) it's still going to take all the mouse clicks, etc. that occur over the transparent part.
Your best bet is to create a new smaller window and make it top-most while hiding the main one.
My application is a Windows Forms one.
I tried using the windows wallpaper, but this depends on the "Fill", "Stretch", "Fit" or "Tile" settings.
I just need the image as it is on the desktop, but including the part "under" the taskbar, because this part is visible in case of transparent taskbar.
Why I need this?
Because I have a tray application which slides from under the taskbar when opening. And I need to set a mask there, so it can't be seen sliding, until it reaches the top of the taskbar. Again, this is only a problem when the taskbar is transparent.
I am not sure if I understood your question correctly. But to me, it seems that you need the image that has created wallpaper. If it seems easier, take a look at registry entries at following location:
HKEY_CURRENT_USER\Control Panel\Desktop
This will give you the path, size, tile/no tile etc. information for the wallpaper.
There is a Win32 function called PaintDesktop you could try but unless I'm misunderstanding things you should be able to just adjust the height of your window so it is never really behind the taskbar...
Why I need this? Because I have a tray application which slides from under the taskbar when opening. And I need to set a mask there, so it can't be seen sliding, until it reaches the top of the taskbar. Again, this is only a problem when the taskbar is transparent.
The problem here is that you're starting the slide up from the bottom of the entire screen, rather than starting from the bottom of the screen's working area (i.e., the top of the taskbar). That's why you're seeing the pop-up window slide up behind a transparent taskbar.
Luckily, the solution is much simpler than obtaining the desktop background and/or doing any type of masking. It's also much faster, and it's always good that your eye candy isn't unnecessarily taxing the user's computer.
All you need to do is determine the coordinates of the screen's working area, which is defined by Windows as the area that can be used by applications, not including the taskbar and other side bars. You can obtain this information easily in WinForms by querying the Screen.PrimaryScreen.WorkingArea property. This will return a Rectangle that corresponds to the primary screen's working area. Since you know that the taskbar is always displayed on the primary screen, this is exactly what you want.
Once you have the coordinates of the primary screen's working area, start your pop-up window's slide from the bottom of that.*
This is a good lesson of why you should always include an explanation of why you want to accomplish something. There's often an even better way that you haven't thought of.
*Of course, I'm ignoring the fact that a user might not have their taskbar positioned at the bottom of the screen. You can put it on either side or even on top. It sounds to me like you haven't considered this in your question, either. If this is an app that you're writing only for yourself or for a controlled environment where you can be sure that no one has their taskbar in non-default positions, that might be OK. But if you're writing software to distribute to a wider audience, you will need to take this into account. The rcWork coordinates will be correct, regardless of where the taskbar is positioned, of course, but you will need to know whether to start the pop-up window's slide from the bottom, the left side, the right side, or the top.
I'm trying to work out what the best way to draw over the top of all other items on the screen on OS X. I don't want to impede the user's ability to interact with their applications, but want to 'annotate' them. I want to be able to draw up to 20 different annotations. The top half of this screenshot from Gizmodo happens to nicely show the kind of thing I want to do. http://gizmodo.com/assets/resources/2006/07/04%20Safari.jpg (sorry, I'm too new to post it as an image)
The questions I think I need to answer are:
Should I create a single window for
each drawing and draw to that? If
so, how do I minimise overhead?
What kind of window or other context should I use given that I don't want any window
decoration?
I don't think I want the overhead of creating 20 windows, but I also don't know that I want to create a full-screen, invisible window that contains my context (I presume a subclassed NSView), because I fear that will a) cause problems interacting with what's below and b) break the niceties of only redrawing when necessary (my actual drawing will likely only cover 10% of the screen)
I've not worked with Quartz2d before, so I just can't get my head around how to get the 'right' context to draw on from the documentation. Any help would be appreciated.
Thanks,
Who
You can only draw into a window. You can make a transparent, borderless window but it will need to be at the front.
You could set it's level to something like NSPopUpMenuWindowLevel to make it draw above other windows (this will be very annoying to users) but clicking on it will:
a) activate and bring to the front your app
b) Prevent the app underneath receiving mouse events
Is that what you want?
Is there anything like Winsplit Revolution for Mac OS X?
Try these:
Zooom/2 ($15) has been my favorite since I installed it. Fast, flexible, and minimizes the number of key combinations I need to remember
Divvy ($15) might soon replace Zoom/2 for me. It's closer to Winsplit. You can arrange windows on a grid, define your own grid arrangements, and define your own shortcuts. It also minimizes the number of keystroke combinations you need to remember. BONUS: There are Mac and Windows versions, which means if you use both platforms you can use the same window management method across all your machines.
Breeze ($8) makes it easy to make windows fullscreen, split left, or split right. It also lets you save screen states (generic) and for specific apps.
Moom ($5) is a more recent entry. It supports both keyboard shortcuts and mouse shortcuts. For the mouse shortcuts, moving the cursor over the greeen zoom button displays a popup list of different layout options: full screen, left/right half, top/bottom half, or any of the corners.
SizeUp ($10) mimics various aspects of WinSplit functionality, but it relies on many keystroke combinations that take time to learn. The advantage is quickly moving windows. The drawback is that it uses up a lot of global keyboard shortcuts, and there are so many I couldn't remember them all.
Cinch ($7) is a mouse-driven app by the makers of SizeUp. Drag your window to various hot zones on the screen edges and the window will "cinch" to that edge and resize to fill half the screen. Similar to the built-in resizing feature in Windows 7.
MercuryMover ($20) is quite powerful and offers fine-grained control. However, there are a lot of different key combinations and, overall, I didn't find it as easy to learn or as elegant as WinSplit. I uninstalled it almost immediately. It struck me as powerful, but inefficient and unwieldy.
The DIY approach (free) mentioned in another post is to combine some applescripts and bind them to quicksilver triggers. I haven't tried this. But it is a free solution.
I found the weak window management one of the hardest things to cope with when I started using a Mac.
Why go beyond spaces and expose?
Winsplit significantly adds to what spaces and expose can do. I didn't understand the appeal until I actually used it. Before that, I thought virtual desktops (ie, like spaces) was enough. Now I consider it must-have functionality, especially on large monitors and multi-mon setups.
On my Windows machine running 3 monitors, I would rank the importance of these different apps in the following order:
Winsplit-like window rearranging
Spaces-like virtual desktops
Expose-like application switching
On my MacBook, I've learned to approach it the other way.
Expose-like application switching
Winsplit-like window rearranging
Spaces-like virtual desktops
From the Winsplit website I understand more or less the functionality; in the past I actually used to have my window manager (Waimea) configured to do exactly that in linux.
You may try using Quicksilver to trigger one of a custom set of applescripts; each applescript would resize and move the currently focused window to a predefined location.
See this macosxhints post for inspiration...
ShiftIt is a free option. Assignable hotkeys to resize to different portions of the screen (Left, Right, Top, Bottom, Top Left, Top Right, Bottom Left, Bottom Right, Full Screen and Center with current size)
Link to ShiftIt on github
Just click on the big download button towards the right of the screen.
Spectacle is a good option, its free and open source. And easy to use with keyboard shortcut :
Windows can be moved to a number of predefined regions of the screen:
Move to the left half ⌥⌘←
Move to the right half ⌥⌘→
Move to the top half ⌥⌘↑
Move to the bottom half ⌥⌘↓
Move to the upper left ⌃⌘←
Move to the lower left ⌃⇧⌘←
Move to the upper right ⌃⌘→
Move to the lower right — ⌃⇧⌘→
Another question on StackOverflow adresses the same issue
https://stackoverflow.com/questions/276760/tiling-window-manager-for-os-x
One answer provided links to an app called TwoUP. It's free, and does the job on OSX!
Thanks to Dong Hoon's answer, I have developed a hybrid solution. Using the AppleScript Editor, you can create scripts to resize the current window, like this:
tell application "System Events"
set _everyProcess to every process
repeat with n from 1 to count of _everyProcess
set _frontMost to frontmost of item n of _everyProcess
if _frontMost is true then set _frontMostApp to process n
end repeat
set _windowOne to window 1 of _frontMostApp
set position of _windowOne to {5, 0}
set size of _windowOne to {1150, 735}
end tell
such a script will work on a 13" MacBook. Using subtle variations of this script saved to /Users/[YourUserNameHere]/Library/Scripts, you can have configure the AppleScript Editor to show itself in the menu bar, where it will allow you to select a script to run.
Using several different scripts, I'm able to resize and reposition any window with only two clicks.
Hope this helps.
It looks like TwoUp is dead, but here are some other options:
Cinch ($7) is like Aero Snap for Mac.
Breeze ($8) allows you to save window states and restore them like a template to another window.
Divvy ($14) shows a grid on the screen where you can select boxes to indicate how you want the window to fill your screen.
I haven't used Winsplit, so I don't know how it compares, but an app I developed, Optimal Layout, offers very flexible window tiling, as well as moving and resizing from the keyboard:
http://most-advantageous.com/optimal-layout/
You can also try Arrange application which features resize and reposition with keyboard shortcuts, on screen menu and by dragging window.
You should also try out secondbar. gives you an extra menubar at the second display + re-arrange options. See this link.
You can even try SplitScreenapp.com. It allows you to resize Mac Windows in many ways including full split, half split, drag and snap, etc.
I doubt it. Between Spaces and Expose, there's not much need for a third-party app to help manage multiple windows.