Bonjour,
Je me suis inspiré de cet exemple pour créé un CMFCToolTipCtrl dans ma CView.
http://www.codeproject.com/Articles/203722/How-to-Use-CMFCToolTipCtrl-Tooltips-in-a-View-for
J'ai donc ça:
ViewToolTip.h:
#pragma once
#include "stdafx.h"
#include <lib_utilities/piString.h>
/////////////////////////////////////////////////////////////////////////////
// CViewToolTipCtrl window
class CViewToolTip : public CMFCToolTipCtrl{
// Construction
public:
static CViewToolTip *instance;
CViewToolTip();
virtual ~CViewToolTip();
int m_nCurrID;
void setText(piString text);
void resetText();
protected:
CSize OnDrawLabel(CDC* pDC,CRect rect,BOOL bCalcOnly);
piString text;
};
ViewToolTip.cpp
#include "stdafx.h"
#include "ViewToolTip.h"
#include "../modelView/AcquiredImageView.h"
/////////////////////////////////////////////////////////////////////////////
// CViewToolTip
CViewToolTip *CViewToolTip::instance = NULL;
//-----------------------------------------
CViewToolTip::CViewToolTip(){
this->m_nCurrID = 0;
this->resetText();
}
//-----------------------------------------
//-----------------------------------------
void CViewToolTip::resetText(){
piString text = _T("Distance: 0\ndx: 0\ndy: 0");
}
//-----------------------------------------
//-----------------------------------------
CViewToolTip::~CViewToolTip(){
}
//-----------------------------------------
//-----------------------------------------
void CViewToolTip::setText(piString text){
this->text = text;
}
//-----------------------------------------
/////////////////////////////////////////////////////////////////////////////
// CViewToolTip message handlers
//-----------------------------------------
CSize CViewToolTip::OnDrawLabel(CDC* pDC, CRect rect, BOOL bCalcOnly){
// TRACE("ENTER CViewToolTip::OnDrawLabel bCalcOnly=%d\n", bCalcOnly);
ASSERT_VALID(pDC);
// my special tooltip drawing system for context sensitive tooltips
// in view (track)
POINT cursor;
GetCursorPos(&cursor);
AcquiredImageView::getCurrentInstance()->ScreenToClient(&cursor);
//GetActiveView()->ScreenToClient(&cursor);
CString labelText = this->text.c_str();
//CString labelText = _T("haha\nhoho");
CString descriptionText = _T("");
CSize sizeText(0, 0);
BOOL bDrawDescr = m_Params.m_bDrawDescription && !m_strDescription.IsEmpty();
CFont* pOldFont = (CFont*) pDC->SelectObject(m_Params.m_bBoldLabel &&
bDrawDescr ? &afxGlobalData.fontBold : &afxGlobalData.fontTooltip);
if (labelText.Find(_T('\n')) >= 0){ // Multi-line text
UINT nFormat = DT_NOPREFIX;
if (bCalcOnly){
nFormat |= DT_CALCRECT;
}
if (m_pRibbonButton != NULL){
nFormat |= DT_NOPREFIX;
}
int nHeight = pDC->DrawText(labelText, rect, nFormat);
sizeText = CSize(rect.Width(), nHeight);
}
else{
if (bCalcOnly){
sizeText = pDC->GetTextExtent(labelText);
}
else{
UINT nFormat = DT_LEFT | DT_NOCLIP | DT_SINGLELINE;
if (!bDrawDescr){
nFormat |= DT_VCENTER;
}
if (m_pRibbonButton != NULL){
nFormat |= DT_NOPREFIX;
}
sizeText.cy = pDC->DrawText(labelText, rect, nFormat);
sizeText.cx = rect.Width();
}
}
pDC->SelectObject(pOldFont);
SetDescription (descriptionText);
return sizeText;
}
//-----------------------------------------
Puis un dans class qui hérite d'une CView:
void AcquiredImageView::OnInitialUpdate(){
...
this->toolTip.CreateEx(this, TTS_NOPREFIX | TTS_NOANIMATE, WS_EX_TRANSPARENT);
...
}
void AcquiredImageView::OnMouseMove(UINT nflags, CPoint pt){
...
CRect viewRect;
this->GetWindowRect(&viewRect);
int xToolTip = viewRect.left + pt.x;
int yToolTip = viewRect.top + pt.y;
CRect toolTipRect;
toolTip.GetWindowRect(&toolTipRect);
int widthToolTip = toolTipRect.Width();
int heightToolTip = toolTipRect.Height();
this->toolTip.MoveWindow(xToolTip, yToolTip, widthToolTip, heightToolTip);
}
void AcquiredImageView::showToolTip(){
TRACE(_T("void AcquiredImageView::showToolTip called\n"));
this->toolTip.Activate(TRUE);
if(this->toolTip.GetToolCount() == 0){
CMFCToolTipInfo params;
params.m_bVislManagerTheme = TRUE;
this->toolTip.SetParams(¶ms);
this->toolTip.SetDelayTime(0);
this->toolTip.AddTool(this, _T("Measure line"));
}
TRACE(_T("void AcquiredImageView::showToolTip end\n"));
}
//-----------------------------------------
void AcquiredImageView::hideToolTip(){
TRACE(_T("void AcquiredImageView::hideToolTip called\n"));
this->toolTip.Activate(FALSE);
this->toolTip.resetText();
TRACE(_T("void AcquiredImageView::hideToolTip end\n"));
}
Mais j'ai deux problème:
1) au bout de 5 secondes, le tool tip disparait.
2) Si je clique sur la vue, le tool tip disparait.
Quelqu'un sait comment je pourrai contrôler correctement l'apparition et disparition du tool tip?
Merci d'avance
