I have a ListView in pure WinAPI. When I click on an item, it puts it in a blue box and sends a click message to the parent window per default styles. However, I am looking for a way to disable this default functionality. Is there a way to simply turn off the highlighting while still having the NM_CLICK message be sent.
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If I click anywhere on the dialog window, like in the "background", or on a Static Text, the function OnLButtonDown() is fired. But if I click a ListBox/EditBox/Combo/Calendar/Checkbox etc is not fired.
I thought that because these have control variables atached to it, and the Static Text don't. But adding a new Listbox to my Dialog and testing, I see that it doesn't fire either, so now I am confused...
I added OnLButtonDown() with the Class Wizard, it appears in:
BEGIN_MESSAGE_MAP(CMFCTesting2Dlg, CDialogEx)
ON_WM_SYSCOMMAND()
// other handlers, etc
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
END_MESSAGE_MAP()
My function:
void CMFCTesting2Dlg::OnLButtonDown(UINT nFlags, CPoint point)
{
AfxMessageBox(CString("BUTTON DOWN"));
CDialogEx::OnLButtonDown(nFlags, point);
}
I tried calling CDialogEx:: ... before AfxMessageBox... but same result.
The CListBox item, has the Notify option set to True, as I seen some advices in other posts.
I suspect that the WM notification message is captured somehow by the ListBox, and not sent "forward" to my CMFCTesting2Dlg, but I understood that this should happen with the Notify option set to True, on the ListBox, no? (well, obviously, not...)
Sorry, I am new to dealing with WM in MFC.
BTW, I use Visual Studio 2010 Ultimate, and this is a Visual C++ - MFC- MFC Application - Dialog Based project.
How can I capture this mouse down event if clicked on a listbox / combo / etc?
On the LONG STORY, I am actually trying to accomplish this issue:
I have two listboxes (lets say), and I want to scroll them synchronously, when user scrolls one of them, others must scroll the same (or update in the next moment). And I thought of using on mouse down to track the position of every Listbox (with the GetTopIndex), and on mouse up, to GetTopIndex again and compare with the previous ones. If a change was made, then a listbox was scrolled and then update all listboxes with SetTopIndex. The unfriendly solution for the user, but simpler for me, would be clicking a button that does this verification / update, but its not elegant at all, and it can only set them at the same level, but can't determine which one was scrolled last time. This automatically scrolling of the listboxes should be made just for displaying, it is not important the selections in the listboxes. I tried using the Message Type in the Add Event Handler for the Listbox, but none that are displayed work for my problem, KillFocus and SetFocus, are not fired if the scroll-bar is dragged, only if an item in the listbox is clicked... and I didn't succeed on the others message type either, from the Add Event Handler.
Once a window handles a message, it stops being sent to the other windows beneath it. A static window doesn't handle a mouse down, so it goes to the dialog. The other controls all handle it in some fashion (setting focus at least) so it never gets to the dialog.
You can override the OnLButtonDown handler in each of the controls to do something else once they've finished their default handling in the base class. You might also get to see the message in the PreTranslateMessage method of the dialog.
As far as getting the List Controls to sync scrolling goes, your best bet would be to intercept WM_VSCROLL by subclassing CListCtrl or perhaps by PreTranslateMessage, and then calling SetScrollInfo on the other list. If the number of items in the lists are the same, it should be fairly simple.
I have a Windows application that registers one CALLBACK procedure that handles WM_HELP messages for the dialog, and one CALLBACK procedure that handles WM_LBUTTONUP messages for a custom button.
Now, when the user clicks the "?" button, then clicks the custom button, the help opens up as expected (on mouse down), BUT if the help window is not occluding the button, a WM_LBUTTONUP message is triggered as well for the custom button (on mouse up). This causes the button to trigger when the user was only asking for help.
Is there any way to stop the WM_LBUTTONUP message from being sent if the button press is for help?
EDIT: The custom button is implemented using a STATIC control. I believe this is because it needs to have an image and no border. So, it does not send BN_CLICKED notifications. In fact, it does not seem to trigger WM_COMMAND in the parent at all.
Thanks
This is normal. Be sure to use the button's BN_CLICKED notification to see the difference. Generated when the user clicks the button, not generated when the user uses the help cursor. The button still sees the normal button up/down messages so that's not a good trigger to detect a click. Extra bonus is that the button can now also be clicked with the keyboard (space bar).
A good class library takes care of these nasty little details.
A better way would be to create ? as a custom control with BS_CHECKBOX | BS_PUSHLIKE style and capture the mouse. After that you will get all the WM_LBUTTONDOWN message to this custom control and then you can use WindowFromPoint to get the window where the WM_LBUTTONDOWN happened and can send a custom notification to the parent window. The parent window can then show a the tooltip or open the help doc or discard it.
The advantage is, you create the control only once and you can use it in multiple places.
Okay, I fixed it by creating the custom button (static control) with the SS_NOTIFY style, then handling the STN_CLICKED notification in the WM_COMMAND message. (SS_NOTIFY causes WM_COMMAND to trigger in the parent when it is clicked.) This does not trigger when using the "?" button. Thanks!
I would like to add a simple text button to my c++ win32 application. I'm creating the button using CreateWindowEx function, but can't figure out the correct style to do so. I would like to display a text only button and be able to recive messages when the user clicks on it. The style i would like to get is identical to the text button in windows 7 system volume control (where it says "Mixer"). If possible i would like to display a tooltip also.
That mixer control looks more like a hyperlink control than a button. I'd go for the SysLink control if that's what you need.
You could create a "Button" class window with the BS_OWNERDRAW style and handle the WM_DRAWITEM messages. In your WM_DRAWITEM message handler you can simply display the text.
Actually that button is an owner draw button - it listens to mouse move messages and when you hover over it, it underlines the text (the syslink control doesn't have this behavior). Otherwise it's a stock button.
I implemented a wizard using property sheet. One one page I display tooltip if user enters something invalid. It is a tracking tooltip so I have to manually turn it on and off. Now I want to move the tooltip when the wizard page moves.
It seems that only the property sheet window receives WM_MOVE event from Windows. The page does not. Is there a way to get notified in the page window when the wizard moved?
The property page isn't moving in relation to its parent window, the property sheet - that's why it's not getting WM_MOVE messages. You can set up a WM_MOVE handler in the property sheet and have it forward another message to the property page with PostMessage or SendMessage. I'd suggest a message in the WM_APP range.
i have a button that is a rectangle how would i put words in it i want to make so ican click the word and it starts the progrma i know ShellExecute the style is BS_GROUPBOX
If you have more than one program you want to start, you need a button per program you want to start.
To start you external progrma, in the button parent window, you need to process the WM_COMMAND message with the BN_CLICKED notification.
To set the text of the button, you need to send WM_SETTEXT message to the button with the text you want shown.
Btw, BS_GROUPBOX is used for creating the rectangle around radio buttons. This style is not going to work for your scenario.
If you want an alternative to using multiple Button controls, you can use a Toolbar. In fact, it seems to me that a toolbar would be a better control for you. You can read more about creating a toolbar.