Sign in to follow this  

EXTREME frustration with tooltips and _TrackMouseEvent( ), please help

This topic is 3780 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Hello, I've been experimenting with tooltips, trying to figure them out. I almost have it, except the tooltip doesn't "behave" like a normal tooltip. When in the client area, even if the mouse is stationary, it constantly updates the tooltip, so it never disappears. I think it's a problem with TRACKMOUSEEVENT in WM_MOUSEMOVE, but I don't know how to proceed from here. Here's the code from the whole program, compilable. Hopefully someone in the future can benefit from this as well. I've searched and experimented for 4 days, and cannot quite get this right. :( Any help would be greatly appreciated. Thanks! :) EDIT: I forgot to mention, that the popup delay and the time before it updates the tooltip again are linked. If I set dwHoverTime to 3000, of course it takes 3 seconds to popup, but it also updates again after 3 seconds. Before, when I was using createwindow and destroywindow when I'd update, it would constantly "blink" inside the client area cause it for some reason keeps updating continuously. Also, I noticed, when using balloontip tooltips, it appears upside down. :(
#include <windows.h>
#include <commctrl.h>

#define TTS_BALLOON 0x40
HWND hwndtooltip = 0;

BOOL createtooltipwindow(char *text)
{
	unsigned int uid = 0;
	TOOLINFO ti;
	POINT point;

	hwndtooltip = CreateWindowEx(WS_EX_TOPMOST,
								TOOLTIPS_CLASS,
								NULL,
								WS_POPUP,	
								CW_USEDEFAULT,
								CW_USEDEFAULT,
								CW_USEDEFAULT,
								CW_USEDEFAULT,
								NULL,
								NULL,
								NULL,
								NULL
							   );

	SendMessage(hwndtooltip,TTM_SETMAXTIPWIDTH,0,300); 

	// INITIALIZE MEMBERS OF THE TOOLINFO STRUCTURE
	ti.cbSize = sizeof(TOOLINFO);
	ti.uFlags = TTF_TRACK | TTF_SUBCLASS;
	ti.hwnd = NULL;
	ti.hinst = NULL;
	ti.uId = uid;
	//ti.lpszText = (LPSTR)(LPCSTR) "Test tooltip text\r\nTesting";
	ti.lpszText = (LPSTR)(LPCSTR) text;
    // ToolTip control will cover the whole window
	ti.rect.left = 0;
	ti.rect.top = 0;
	ti.rect.right = 0;
	ti.rect.bottom = 0;

	GetCursorPos(&point);
	SendMessage(hwndtooltip, TTM_ADDTOOL, 0, (LPARAM) (LPTOOLINFO) &ti);
	SendMessage(hwndtooltip, TTM_TRACKPOSITION, 0, (LPARAM)MAKELONG(point.x+15, point.y+15));
	SendMessage(hwndtooltip, TTM_TRACKACTIVATE, true, (LPARAM)(LPTOOLINFO) &ti);
	//SendMessage(hwndtooltip, TTM_SETDELAYTIME, (WPARAM) (DWORD)TTDT_AUTOPOP, (LPARAM) MAKELONG(3000, 0));
	return TRUE;
}

void updatetooltipwindow(char *text)
{
	unsigned int uid = 0;
	TOOLINFO ti;
	POINT point;

	ti.cbSize = sizeof(TOOLINFO);
	ti.uFlags = TTF_TRACK | TTF_SUBCLASS;
	ti.hwnd = NULL;
	ti.hinst = NULL;
	ti.uId = uid;
	ti.lpszText = (LPSTR)(LPCSTR) text;

	GetCursorPos(&point);
	SendMessage(hwndtooltip, TTM_TRACKPOSITION, 0, (LPARAM)MAKELONG(point.x+15, point.y+15));
	SendMessage(hwndtooltip, TTM_TRACKACTIVATE, true, (LPARAM)(LPTOOLINFO) &ti);
	SendMessage(hwndtooltip, TTM_UPDATETIPTEXT, 0, (LPARAM) (LPTOOLINFO)&ti);
}
 
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch(msg)
    {
		case WM_CREATE:
		break;
        case WM_CLOSE:
            DestroyWindow(hwnd);
        break;
        case WM_DESTROY:
            PostQuitMessage(0);
        break;
        case WM_NOTIFY:
            switch (((LPNMHDR)lParam)->code)
            {
            case TCN_SELCHANGE:
                {
                    break;
                } 
            }
        break;

		case WM_MOUSEHOVER:
			if(hwndtooltip == 0)
			{
			createtooltipwindow("Mouse hovering\r\nOver client area");
			}
			updatetooltipwindow("Mouse hovering\r\nOver client area");
			break;

		case WM_MOUSEMOVE:

			TRACKMOUSEEVENT tme ;
			tme.cbSize    = sizeof ( TRACKMOUSEEVENT ) ;
			tme.dwFlags   = TME_LEAVE | TME_HOVER ;
			tme.hwndTrack = hwnd;
			tme.dwHoverTime = 500;
			_TrackMouseEvent ( & tme ) ;
			break;

		case WM_LBUTTONDOWN:
			if(hwndtooltip == 0)
			{
				createtooltipwindow("Left mouse button pressed");
			}
			updatetooltipwindow("Left mouse button pressed");
			break;

		case WM_MOUSELEAVE:
			DestroyWindow(hwndtooltip);
			hwndtooltip = 0;
			break;

        default:
            return DefWindowProc(hwnd, msg, wParam, lParam);
    }
    return 0;
}
 
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
    LPSTR lpCmdLine, int nCmdShow)
{
    WNDCLASSEX wc;
    HWND hwnd;
    MSG Msg;
    
    wc.cbSize        = sizeof(WNDCLASSEX);
    wc.style         = 0;
    wc.lpfnWndProc   = WndProc;
    wc.cbClsExtra    = 0;
    wc.cbWndExtra    = 0;
    wc.hInstance     = hInstance;
    wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    wc.lpszMenuName  = NULL;
    wc.lpszClassName = "myWindowClass";
    wc.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);
 
    RegisterClassEx(&wc);
 
   
    hwnd = CreateWindowEx(
        NULL,
        "myWindowClass",
        "The title of my window",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, 300, 250,
        NULL, NULL, hInstance, NULL);
 
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
    
    while(GetMessage(&Msg, NULL, 0, 0) > 0)
    {
        TranslateMessage(&Msg);
        DispatchMessage(&Msg);
    }
    return Msg.wParam;
}





[Edited by - talin29 on August 13, 2007 11:58:03 PM]

Share this post


Link to post
Share on other sites

This topic is 3780 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this