001
12.10.2005, 14:42 Uhr
FloSoft
Medialer Over-Flow
(Administrator)
|
ok habs nun nur über das neuerstellen der Combo hinbekommen:
umstellen auf "CBS_SIMPLE", Combo neu erstellen.
Ich poste mal die Klasse die das macht:
| C++: |
#include "stdafx.h"
#include "MyComboBox.h"
IMPLEMENT_DYNAMIC(CMyComboBox, CComboBox)
BEGIN_MESSAGE_MAP(CMyComboBox, CComboBox)
END_MESSAGE_MAP()
CMyComboBox::CMyComboBox()
{
m_nDropHeight = 0;
m_nMaxChars = 0;
}
CMyComboBox::~CMyComboBox()
{
}
void CMyComboBox::SetMaxChars(int nChars)
{
COMBOBOXINFO info;
ZeroMemory(&info, sizeof(COMBOBOXINFO));
info.cbSize = sizeof(COMBOBOXINFO);
GetComboBoxInfo(&info);
m_nMaxChars = nChars;
::SendMessage(info.hwndItem, EM_LIMITTEXT, nChars, 0);
}
void CMyComboBox::SwitchToSimple()
{
if( (GetStyle() & CBS_SIMPLE) == CBS_SIMPLE)
return;
CRect rc;
GetDroppedControlRect(&rc);
m_nDropHeight = rc.Height();
ModifyStyle(CBS_DROPDOWN, CBS_SIMPLE);
RecreateComboBox();
SetWindowPos( NULL, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED );
COMBOBOXINFO info;
ZeroMemory(&info, sizeof(COMBOBOXINFO));
info.cbSize = sizeof(COMBOBOXINFO);
GetComboBoxInfo(&info);
if(m_nMaxChars > 0)
::SendMessage(info.hwndItem, EM_LIMITTEXT, m_nMaxChars, 0);
}
void CMyComboBox::SwitchToDropDown()
{
if( (GetStyle() & CBS_DROPDOWN) == CBS_DROPDOWN)
return;
ModifyStyle(CBS_SIMPLE, CBS_DROPDOWN);
RecreateComboBox();
SetWindowPos( NULL, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED );
COMBOBOXINFO info;
ZeroMemory(&info, sizeof(COMBOBOXINFO));
info.cbSize = sizeof(COMBOBOXINFO);
GetComboBoxInfo(&info);
CRect rectEdit, rectCombo;
GetWindowRect(&rectCombo);
::GetWindowRect(info.hwndItem, &rectEdit);
int nNonDropHeight = rectEdit.Height() + (::GetSystemMetrics(SM_CYEDGE) * 2);
rectCombo.bottom = rectCombo.top + nNonDropHeight + m_nDropHeight;
if (::GetParent(GetSafeHwnd()))
{
::ScreenToClient(::GetParent(GetSafeHwnd()), &rectCombo.TopLeft());
::ScreenToClient(::GetParent(GetSafeHwnd()), &rectCombo.BottomRight());
}
::MoveWindow(GetSafeHwnd(), rectCombo.left, rectCombo.top, rectCombo.Width(), rectCombo.Height(), TRUE);
if(m_nMaxChars > 0)
::SendMessage(info.hwndItem, EM_LIMITTEXT, m_nMaxChars, 0);
}
BOOL CMyComboBox::RecreateComboBox(LPVOID lpParam)
{
if (this->GetSafeHwnd() == NULL)
return FALSE;
CWnd* pParent = GetParent();
if (pParent == NULL)
return FALSE;
// get current attributes
DWORD dwStyle = GetStyle();
DWORD dwStyleEx = GetExStyle();
CRect rc;
// GetDroppedControlRect(&rc);
// DP: Altered as per suggestion by CheGueVerra
GetWindowRect(&rc);
pParent->ScreenToClient(&rc); // map to client co-ords
UINT nID = GetDlgCtrlID();
CFont* pFont = GetFont();
CWnd* pWndAfter = GetNextWindow(GW_HWNDPREV);
// get the currently selected text (and whether it is a valid list selection)
CString sCurText;
int nCurSel = GetCurSel();
BOOL bItemSelValid = nCurSel != -1;
if (bItemSelValid)
GetLBText(nCurSel, sCurText);
else
GetWindowText(sCurText);
// copy the combo box items into a temp combobox (not sorted)
// along with each item's data
CComboBox comboNew;
if (! comboNew.CreateEx(dwStyleEx, _T("COMBOBOX"), _T(""), dwStyle, rc, pParent, nID, lpParam))
return FALSE;
comboNew.SetFont(pFont);
int nNumItems = GetCount();
for (int n = 0; n < nNumItems; n++)
{
CString sText;
GetLBText(n, sText);
int nNewIndex = comboNew.AddString(sText);
comboNew.SetItemData(nNewIndex, GetItemData(n));
}
// re-set selected text
if (bItemSelValid)
comboNew.SetCurSel(comboNew.FindStringExact(-1, sCurText));
else
comboNew.SetWindowText(sCurText);
// destroy the existing window, then attach the new one
DestroyWindow();
HWND hwnd = comboNew.Detach();
Attach(hwnd);
// position correctly in z-order
SetWindowPos(pWndAfter == NULL ? &CWnd::wndBottom : pWndAfter, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
return TRUE;
}
|
| C++: |
#pragma once
class CMyComboBox : public CComboBox
{
DECLARE_DYNAMIC(CMyComboBox)
public:
CMyComboBox();
virtual ~CMyComboBox();
void SwitchToSimple();
void SwitchToDropDown();
void SetMaxChars(int nChars);
protected:
BOOL RecreateComboBox(LPVOID lpParam = 0);
DECLARE_MESSAGE_MAP()
private:
int m_nDropHeight;
int m_nMaxChars;
};
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Benutzung dann z.b "m_cbMyCombo.SwitchToSimple()" oder "m_cbMyCombo.SwitchToDropDown()"
--
class God : public ChuckNorris { }; |
