I have an app that contains a CControlBar and in that sits a few CStatic Objects which each display an icon with some text.
I have a bug where if I keep resizing the control bar a bit using the mouse, all the text and icons on the control bat as well as other icons and menu item texts across my whole app go invisible / break.
Is there a specific type of redraw function of a specific class that i should be using from the onSize method? or is there something else i need to be doing?
Thanks
Related
I've designed a toolbox control. It's inside a CDockablePane object. Since the tools inside it may need to be scrolled, I've created a CScrollView as a child of the pane and have inserted the tools inside it as children. Based on the pane size, scrollbars of the CScrollView object appear properly, but clicking on them doesn't scroll the view. It seems that they're disabled. When I use SS_NOTIFY style when creating the CScrollView, the CScrollView object receives mouse clicks, but when i don't use the style, it doesn't. But it seems that the scroll bars inside the view control don't receive clicks. When mouse hover over them, no visual effect in scroll bars appears. It seems that the scroll bars are disabled, while I've not created nor manipulate them.
What's wrong?
mouse wheel works. click on scrollbars is received by the scroll view, not by the scrollbars. inside handler, i wrote this code:
CScrollBar *pScroll = GetScrollBarCtrl(SB_VERT);
if (pScroll->GetSafeHwnd())
{
...
if is not true. this means that the scroll view has not a scroll bar, but if so, how is it shown?!
any idea?
...
since i didn't get answer, i'm going to clarify my question with a sample code:
https://dl.dropboxusercontent.com/u/4829119/930501%20-%20t3.zip
in this sample, how can i scroll my view as i do with other views like class view and file view?
the sample code screenshot:
https://www.dropbox.com/s/7pu5chpyj9hqeal/Screenshot%202014-07-23%2003.40.26.png
Did you initialize by calling SetScrollSizes? The scroll bars are enabled only when the sizeTotal is larger than the view window size.
I am making an SDI MDF application that uses a frameview to provid the user with a set of controls (buttons, editboxes and such). The view also owns a set of CDialogs used to desplay aditional controls that can be can be shown or hidden via a tabcontrol and other means. Untill recently the dialogs have been staticly placed at creation to be in their proper location on the screen but I wanted to add a dialog that the user could move around but is still a child of the view. When I created a dialog with a caption and sysmenu that the user can move around the issue I am running into is that when the window is placed over another control owned by the view, (lets say a button) when the paint method is called on the button, it draws over the dialog. The dialog is still on top and the dialogs controls can still be interacted with but the button is drawn over them untill the dialog is repainted. I have tryed to change the clipchild and clipsiblings settings of the dialog and have been able to get the dialogs to properly clip eachother but can not seem to get the child dialog to properly clip the parent view controls. Does anyone have any ideas on what setting might fix this clipping issue.
I want to design a student registration and exam recording app using C++ MFC with a kind of child window containing buttons edits and other common controls which is displayed on the app client area, and can be removed and replaced with another one by clicking a button. Thats the problem i face now( The GUI ). I came from JAVA background where this can be done by creating a JPanel as a container for the buttons, combo boxes and text fields controls. the panel is displayed on the client area and can be removed and replaced with another panel containing a new set of controls. I tried learning CView but it keeps talking about documents and views that displays untitled document as in word processing. Any pointer will be appreciated. Thanks.
After having searched and read a lot about my problem, i decided to go into win32 API where everything is possible depending on your awareness.The solution is as simple as creating a main window and creating any number of child windows who uses the main window as parent and all has a hiden window attribute. Then you can create controls on each child window. To switch between the child windows I did this: ShowWindow(childWindow1, SW_HIDE); ShowWindow(childWindow2, SW_SHOW);. thats it, only that the repaint process after restore does not repaint the child window's controls and its child window.
I have a member of CWnd class name mywindow
and i want to add to it a scroll-bar.
how i can do it?
i try already to do:
mywindow.EnableScrollBarCtrl(SB_BOTH,TRUE);
it display both Horizontal and Vertical scroll-bars,
but i cannot push the buttons or move the scroll-bars.
i try also after the first command:
mywindow.EnableScrollBar(SB_BOTH,ESB_ENABLE_BOTH);
and it change nothing.
can someone could show me a simple example how to add scroll-bar to this member?
thanks a lot,
Tal
Enabling the scroll bars isn't enough. You have to react to the window messages WM_HSCROLLand WM_VSCROLL. Using the GetScrollInfo method you get the position (value) of the scroll bars and then you draw your window content according to this position.
Look up some scroll bar tutorials such as http://www.codeproject.com/KB/dialog/scrolling_support.aspx . In essence, dwo's comment above is what you need to do - handle those messages and set the virtual client area size.
There must be some 'overflow' before scroll bars became active.
Write some 'sufficiently long' data in your view and the scrollbars will become active (at least, that was my experience time ago).
Usually scroll bars get handled 'automatically' from MFC components like (for instance) text editor or form view. I.e. will became visible when needed also without explicit call EnableScrollBarCtrl ...
I'm trying to create a custom dropdown for a derivative of CComboBox. The dropdown will be a calendar control plus some 'hotspots', e.g.
So I figure the best way to achieve this is to have a simple CWnd-derived class which acts as the parent to the calendar control, and have it paint the hotspots itself.
The window needs to be a popup window - I think - rather than a child window so that it isn't clipped. But doing this causes the dialog (on which the combobox control is placed) to stop being the topmost (foreground?) window, leading to its frame being drawn differently:
alt text http://img693.imageshack.us/img693/3474/35148785.png
This spoils the illusion that the dropdown is part of the combobox since its acting more like a modal dialog at this point. Any suggestions on how I make the custom dropdown behave like the regular dropdown?
Are there any other pitfalls I need to watch out for, e.g. focus and mouse capture issues?
When you create your popup window, you need to specify its owner. Owned popup windows will activate their owner when you activate them. Not specifying an owner will cause your window to get activated, which causes the change in the owner you're seeing.
Yeah I had this problem once. A quick google makes me suspect I solved this by using CreateWindowEx() and specifying WS_EX_NOACTIVATE. I have some other code that achieves the same effect by making the window with WS_EX_TOOLWINDOW rather than as a popup window, but I'm not sure of why that was done that way, my intuition would say that making it a popup window would be the way to go.
You can find in the following links two sample project that put in the CComboBox dropdown window a CTreeCtrl or a CListCtrl controls ... similar, you can put whatever you need there. Here is the links:
Tree ComboBox Control
and
List ComboBox Control
I hope this help you.