Function EditInvertCase

src/Edit.c:1464–1511

============================================================================= EditInvertCase()

//  EditInvertCase()
//
void EditInvertCase ( HWND hwnd )
{
    int cchTextW;
    int iCurPos;
    int iAnchorPos;
    UINT cpEdit;
    int i;
    BOOL bChanged = FALSE;
    iCurPos    = ( int ) SendMessage ( hwnd, SCI_GETCURRENTPOS, 0, 0 );
    iAnchorPos = ( int ) SendMessage ( hwnd, SCI_GETANCHOR, 0, 0 );
    if ( iCurPos != iAnchorPos ) {
        if ( SC_SEL_RECTANGLE != SendMessage ( hwnd, SCI_GETSELECTIONMODE, 0, 0 ) ) {
            int iSelCount = ( int ) SendMessage ( hwnd, SCI_GETSELECTIONEND, 0, 0 ) -
                            ( int ) SendMessage ( hwnd, SCI_GETSELECTIONSTART, 0, 0 );
            char  *pszText  = GlobalAlloc ( GPTR, ( iSelCount ) + 2 );
            LPWSTR pszTextW = GlobalAlloc ( GPTR, ( iSelCount * 2 ) + 2 );
            if ( pszText == NULL || pszTextW == NULL ) {
                GlobalFree ( pszText );
                GlobalFree ( pszTextW );
                return;
            }
            SendMessage ( hwnd, SCI_GETSELTEXT, 0, ( LPARAM ) pszText );
            cpEdit = ( UINT ) SendMessage ( hwnd, SCI_GETCODEPAGE, 0, 0 );
            cchTextW = MultiByteToWideChar ( cpEdit, 0, pszText, iSelCount, pszTextW, ( int ) GlobalSize ( pszTextW ) / sizeof ( WCHAR ) );
            for ( i = 0; i < cchTextW; i++ ) {
                if ( IsCharUpperW ( pszTextW[i] ) ) {
                    pszTextW[i] = LOWORD ( CharLowerW ( ( LPWSTR ) ( LONG_PTR ) MAKELONG ( pszTextW[i], 0 ) ) );
                    bChanged = TRUE;
                } else if ( IsCharLowerW ( pszTextW[i] ) ) {
                    pszTextW[i] = LOWORD ( CharUpperW ( ( LPWSTR ) ( LONG_PTR ) MAKELONG ( pszTextW[i], 0 ) ) );
                    bChanged = TRUE;
                }
            }
            if ( bChanged ) {
                WideCharToMultiByte ( cpEdit, 0, pszTextW, cchTextW, pszText, ( int ) GlobalSize ( pszText ), NULL, NULL );
                SendMessage ( hwnd, SCI_BEGINUNDOACTION, 0, 0 );
                SendMessage ( hwnd, SCI_CLEAR, 0, 0 );
                SendMessage ( hwnd, SCI_ADDTEXT, ( WPARAM ) iSelCount, ( LPARAM ) pszText );
                SendMessage ( hwnd, SCI_SETSEL, ( WPARAM ) iAnchorPos, ( LPARAM ) iCurPos );
                SendMessage ( hwnd, SCI_ENDUNDOACTION, 0, 0 );
            }
            GlobalFree ( pszText );
            GlobalFree ( pszTextW );
        } else {
            MsgBox ( MBINFO, IDS_SELRECT );
        }
    }
}


//=============================================================================