Click here to Skip to main content
15,897,371 members

cursor MFC problem (disappear)

thanh15 asked:

Open original thread
hi, i'm studying MFC and had a problem with cursor
I create an image control program which can zoom, rotate, panning and swapping images
I tried to change the cursor's shape for each function of my program, but it just work when no image in cell! when there are image in cell, the cursor just disappear.
Can anyone help me out. (sorry for my Eng :( )
Here is part of my code
C++
void CImageEdittingView::SwapMouseDown(int fMouseX, int fMouseY)
{
    

    CImageEdittingDoc* pDoc = GetDocument();
    ASSERT_VALID(pDoc);
    if (!pDoc)
        return;

    if (fMouseX > pDoc->m_layout->GetInitX()&& 
        fMouseX < (pDoc->m_layout->GetInitX() + pDoc->m_layout->GetWidth()))

        if (fMouseY > pDoc->m_layout->GetInitY() &&
            fMouseY < (pDoc->m_layout->GetInitY() + pDoc->m_layout->GetHeigh()))
        {
            HCURSOR hSwapClose = LoadCursorFromFile("res\\cursor_drag_hand.ico");
            ::SetCursor(hSwapClose);
                    
            //SetClassLong(m_hWnd, GCL_HCURSOR,(LONG)hZoomOut);
            ShowCursor(TRUE);
        }
}

void CImageEdittingView::SwapMouseUp(int fMouseX, int fMouseY)
{
    //lay ra layout
    CImageEdittingDoc* pDoc = GetDocument();
    ASSERT_VALID(pDoc);
    if (!pDoc)
        return;
    
    if (fMouseX > pDoc->m_layout->GetInitX()&& 
        fMouseX < (pDoc->m_layout->GetInitX() + pDoc->m_layout->GetWidth()))

        if (fMouseY > pDoc->m_layout->GetInitY() &&
            fMouseY < (pDoc->m_layout->GetInitY() + pDoc->m_layout->GetHeigh()))
        {
            HCURSOR hSwapOpen = LoadCursorFromFile("res\\cursor_hand.ico");
            ::SetCursor(hSwapOpen);
                    
            //SetClassLong(m_hWnd, GCL_HCURSOR,(LONG)hZoomOut);
            ShowCursor(TRUE);
        }

    Graphics gr(this->GetDC()->m_hDC);
    
    CLayout* layout = pDoc->m_layout;
    int newIndex = layout->GetCellIndexFromPosition(fMouseX, fMouseY);

    if(newIndex >= 0)
    {
        int oldIndex = layout->GetCurrCellIndex();

        layout->Swap(oldIndex, newIndex);

        layout->GetCell(newIndex)->Draw(&gr, GetScrollPos(SB_HORZ), GetScrollPos(SB_VERT));

        layout->GetCell(oldIndex)->Draw(&gr, GetScrollPos(SB_HORZ), GetScrollPos(SB_VERT));

        layout->GetCurrCell()->DrawCellBorder(&gr, CUltil::clActiveBorderColor, GetScrollPos(SB_HORZ), GetScrollPos(SB_VERT));
    }
}
Tags: C++, MFC

Plain Text
ASM
ASP
ASP.NET
BASIC
BAT
C#
C++
COBOL
CoffeeScript
CSS
Dart
dbase
F#
FORTRAN
HTML
Java
Javascript
Kotlin
Lua
MIDL
MSIL
ObjectiveC
Pascal
PERL
PHP
PowerShell
Python
Razor
Ruby
Scala
Shell
SLN
SQL
Swift
T4
Terminal
TypeScript
VB
VBScript
XML
YAML

Preview



When answering a question please:
  1. Read the question carefully.
  2. Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
  3. If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
  4. Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.
Let's work to help developers, not make them feel stupid.
Please note that all posts will be submitted under the http://www.codeproject.com/info/cpol10.aspx.



CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900