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PC World Komputer 1998 May
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Pcwk5b98.iso
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Borland
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Cplus45
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BC45
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CURSOR.PAK
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CURSOR.CPP
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C/C++ Source or Header
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1995-08-29
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6KB
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205 lines
//----------------------------------------------------------------------------
// ObjectWindows - (C) Copyright 1991, 1993 by Borland International
//----------------------------------------------------------------------------
#include <owl\owlpch.h>
#include <owl\applicat.h>
#include <owl\dialog.h>
#include <owl\framewin.h>
#include <stdlib.h>
#include "cursor.h"
class TCursorDlg : public TDialog {
public:
TCursorDlg(TWindow* parent, const char far* name);
void UpdateDialog();
BOOL ShouldUpdate() {return Update;}
protected:
void SetupWindow();
void CloseWindow(int);
void CmOk() {} // Override the meaning of OK & Cancel to do nothing.
void CmCancel() {}
private:
BOOL Update;
DECLARE_RESPONSE_TABLE(TCursorDlg);
};
DEFINE_RESPONSE_TABLE1(TCursorDlg, TDialog)
EV_COMMAND(IDOK, CmOk),
EV_COMMAND(IDCANCEL, CmCancel),
END_RESPONSE_TABLE;
TCursorDlg::TCursorDlg(TWindow* parent, const char far* name)
: TWindow(parent),
TDialog(parent, name),
Update(FALSE)
{
EnableAutoCreate();
}
void
TCursorDlg::SetupWindow()
{
TDialog::SetupWindow();
Update = TRUE;
}
void
TCursorDlg::CloseWindow(int retVal)
{
Update = FALSE; // disable updating
TDialog::CloseWindow(retVal);
}
void
TCursorDlg::UpdateDialog()
{
TPoint Point;
static TPoint prevPoint(-1,-1);
static HWND hPrevWnd = (HWND)-1;
static HWND hPrevParent = (HWND)-1;
HWND hWndFromPt;
HWND hParent = hPrevParent;
HWND hFocus;
static HWND hPrevFocus = (HWND)-1;
static TRect Rect;
static TRect prevRect(-1, -1, -1, -1);
char buffer[26];
if (Update) {
GetCursorPos(Point);
// If the cursor position has changed...
//
if (Point != prevPoint) {
prevPoint = Point;
SetDlgItemText(IDD_SX, ltoa(Point.x, buffer, 10));
SetDlgItemText(IDD_SY, ltoa(Point.y, buffer, 10));
if ((hWndFromPt = ::WindowFromPoint(Point)) != 0) {
// Set the x and y coordinates in terms
// of the client area of the underlying window.
//
::ScreenToClient(hWndFromPt, &Point);
SetDlgItemText(IDD_WX, ltoa(Point.x, buffer, 10));
SetDlgItemText(IDD_WY, ltoa(Point.y, buffer, 10));
if ((hParent = ::GetParent(hWndFromPt)) != 0) {
// Set the x and y coordinates in terms of the client area of
// the parent of the window.
//
Point = prevPoint;
::ScreenToClient(hParent, &Point);
SetDlgItemText(IDD_PX, ltoa(Point.x, buffer, 10));
SetDlgItemText(IDD_PY, ltoa(Point.y, buffer, 10));
} else {
// If the window has no parent,
// leave the x and y fields blank.
//
SetDlgItemText(IDD_PX, "");
SetDlgItemText(IDD_PY, "");
}
// If there is no window at the current point,
// the x and y coordinates should be blank
// in the dialog box.
//
} else {
SetDlgItemText(IDD_WX, "");
SetDlgItemText(IDD_WY, "");
}
// Update the display of the handle of the
// underlying window if necessary.
//
if (hWndFromPt != hPrevWnd)
SetDlgItemText(IDD_HW, itoa((UINT)hWndFromPt, buffer, 16));
// If the parent window has changed,
// update the display of its handle.
//
if (hParent != hPrevParent) {
if (!hWndFromPt || !hParent)
SetDlgItemText(IDD_HP, "");
else
SetDlgItemText(IDD_HP, itoa((UINT)hParent, buffer, 16));
} else {
// If there is no underlying window,
// do not display a handle for a parent.
//
if (!hWndFromPt)
SetDlgItemText(IDD_HP, "");
}
hPrevWnd = hWndFromPt;
hPrevParent = hParent;
}
// Update the focus display fields if necessary.
//
hFocus = ::GetFocus();
if (!hFocus) {
if (hFocus != hPrevFocus) {
SetDlgItemText(IDD_HF, "");
SetDlgItemText(IDD_LEFT, "");
SetDlgItemText(IDD_TOP, "");
SetDlgItemText(IDD_RIGHT, "");
SetDlgItemText(IDD_BOTTOM, "");
}
} else {
if (hFocus != hPrevFocus) {
SetDlgItemText(IDD_HF, itoa((UINT)hFocus, buffer, 16));
}
::GetWindowRect(hFocus, &Rect);
if (Rect != prevRect) {
prevRect = Rect;
SetDlgItemText(IDD_LEFT, ltoa(Rect.left, buffer, 10));
SetDlgItemText(IDD_TOP, ltoa(Rect.top, buffer, 10));
SetDlgItemText(IDD_RIGHT, ltoa(Rect.right, buffer, 10));
SetDlgItemText(IDD_BOTTOM, ltoa(Rect.bottom, buffer, 10));
}
}
hPrevFocus = hFocus;
}
}
//----------------------------------------------------------------------------
class TCursorApplication : public TApplication {
public:
TCursorApplication() : TApplication("Cursor Location App") {}
void InitMainWindow() {
EnableCtl3d();
Dialog = new TCursorDlg(0, "CursorDlg");
MainWindow = new TFrameWindow(0, "Cursor Location", Dialog, TRUE);
MainWindow->SetIcon(this, "CursorDlg");
MainWindow->Attr.Style &= ~(WS_MAXIMIZEBOX|WS_THICKFRAME);
}
BOOL IdleAction(long) {
if (Dialog && Dialog->ShouldUpdate())
Dialog->UpdateDialog();
return TRUE; // Keep calling us
}
private:
TCursorDlg* Dialog;
};
int
OwlMain(int /*argc*/, char* /*argv*/ [])
{
#if defined(__WIN32__)
if (!(::GetVersion()&0x80000000)) {
::MessageBox(0, "This is not a Win NT Example", "OWL Examples", MB_OK);
return 0;
}
#endif
return TCursorApplication().Run();
}