winapi — Win32 API C ++, идентификатор не получен с WM_COMMAND

Я довольно новый программист Win32 API C ++.

Я только что узнал, как создавать меню и прикреплять их к окнам.
Проблема в том, что мои идентификаторы MenuItem не отправляются.

Например:
Мой пункт меню File >> Exit должен отправить Идентификатор ID_FILE_EXIT в WM_COMMAND.
Но где-то на линии мой коммутатор MSG не получает этот идентификатор; т.е. мои пункты меню не работают.

resouce.h:

// resources.h

#ifndef RESOURCE_H
#define RESOURCE_H

// Main Window: Menu ID
#define IDR_MAIN_MENU          101

// Main Window: Menu: Command IDs
#define ID_FILE_EXIT           101101

#define ID_PRIMITIVE_LINE      101201
#define ID_PRIMITIVE_RECTANGLE 101202
#define ID_PRIMITIVE_ELLIPSE   101203

#define ID_PENCOLOUR_BLACK     101301
#define ID_PENCOLOUR_WHITE     101302
#define ID_PENCOLOUR_RED       101303
#define ID_PENCOLOUR_GREEN     101304
#define ID_PENCOLOUR_BLUE      101305

#define ID_BRUSHCOLOUR_BLACK   101401
#define ID_BRUSHCOLOUR_WHITE   101402
#define ID_BRUSHCOLOUR_RED     101403
#define ID_BRUSHCOLOUR_GREEN   101404
#define ID_BRUSHCOLOUR_BLUE    101405

#define ID_PENSTYLE_SOLID      101501
#define ID_PENSTYLE_NULL       101502
#define ID_PENSTYLE_DOTTED     101503
#define ID_PENSTYLE_DASHED     101504

#define ID_BRUSHSTYLE_SOLID    101601
#define ID_BRUSHSTYLE_NULL     101602
#define ID_BRUSHSTYLE_DIAGONAL 101603
#define ID_BRUSHSTYLE_CROSS    101604

#endif // RESOURCE_H

resource.rc:

// resouce.rc

#include <windows.h>
#include <commctrl.h>
#include <richedit.h>
#include "resource.h"
IDR_MAIN_MENU MENU
{
popup "File"{
MENUITEM "Exit",        ID_FILE_EXIT
}

popup "Primitive"{
MENUITEM "Line",        ID_PRIMITIVE_LINE
MENUITEM "Rectangle",   ID_PRIMITIVE_RECTANGLE
MENUITEM "Ellipse",     ID_PRIMITIVE_ELLIPSE
}

popup "Pen Colour"{
MENUITEM "Black",       ID_PENCOLOUR_BLACK
MENUITEM "White",       ID_PENCOLOUR_WHITE
MENUITEM "Red",         ID_PENCOLOUR_RED
MENUITEM "Green",       ID_PENCOLOUR_GREEN
MENUITEM "Blue",        ID_PENCOLOUR_BLUE
}

popup "Brush Colour"{
MENUITEM "Black",       ID_BRUSHCOLOUR_BLACK
MENUITEM "White",       ID_BRUSHCOLOUR_WHITE
MENUITEM "Red",         ID_BRUSHCOLOUR_RED
MENUITEM "Green",       ID_BRUSHCOLOUR_GREEN
MENUITEM "Blue",        ID_BRUSHCOLOUR_BLUE
}

popup "PenStyle"{
MENUITEM "Solid",       ID_PENSTYLE_SOLID
MENUITEM "Dotted",      ID_PENSTYLE_DOTTED
MENUITEM "Dashed",      ID_PENSTYLE_DASHED
}

popup "Brush Style"{
MENUITEM "Solid",       ID_BRUSHSTYLE_SOLID
MENUITEM "Null",        ID_BRUSHSTYLE_NULL
MENUITEM "Diagonal",    ID_BRUSHSTYLE_DIAGONAL
MENUITEM "Cross",       ID_BRUSHSTYLE_CROSS
}
}

main.cpp (extract) — инструкция переключения msg:

...

switch(msg)
{
case WM_CREATE:
CheckMenuItem(ghMainMenu, ID_PRIMITIVE_LINE, MF_CHECKED);
CheckMenuItem(ghMainMenu, ID_PENCOLOUR_BLACK, MF_CHECKED);
CheckMenuItem(ghMainMenu, ID_BRUSHCOLOUR_BLACK, MF_CHECKED);
CheckMenuItem(ghMainMenu, ID_PENSTYLE_SOLID, MF_CHECKED);
CheckMenuItem(ghMainMenu, ID_BRUSHSTYLE_SOLID, MF_CHECKED);
return 0;

case WM_COMMAND:
switch(LOWORD(wParam))
{
//=====================================
// File Menu
//=====================================
case ID_FILE_EXIT:
DestroyWindow(ghMainWnd);
return 0;

//=====================================
// Primitive Types (Shape Types)
//=====================================
case ID_PRIMITIVE_LINE:
CheckMenuItem(ghMainMenu, ID_PRIMITIVE_LINE, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPrimSel, MF_UNCHECKED);
gCurrPrimSel = ID_PRIMITIVE_LINE;
return 0;

case ID_PRIMITIVE_RECTANGLE:
CheckMenuItem(ghMainMenu, ID_PRIMITIVE_RECTANGLE, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPrimSel, MF_UNCHECKED);
gCurrPrimSel = ID_PRIMITIVE_RECTANGLE;
return 0;

case ID_PRIMITIVE_ELLIPSE:
CheckMenuItem(ghMainMenu, ID_PRIMITIVE_ELLIPSE, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPrimSel, MF_UNCHECKED);
gCurrPrimSel = ID_PRIMITIVE_ELLIPSE;
return 0;

//=====================================
// Pen Colours
//=====================================
case ID_PENCOLOUR_BLACK:
CheckMenuItem(ghMainMenu, ID_PENCOLOUR_BLACK, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPenColSel, MF_UNCHECKED);
gCurrPenColSel    = ID_PENCOLOUR_BLACK;
gLogPen.lopnColor = BLACK;
return 0;

case ID_PENCOLOUR_WHITE:
CheckMenuItem(ghMainMenu, ID_PENCOLOUR_WHITE, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPenColSel, MF_UNCHECKED);
gCurrPenColSel    = ID_PENCOLOUR_WHITE;
gLogPen.lopnColor = BLACK;
return 0;

case ID_PENCOLOUR_RED:
CheckMenuItem(ghMainMenu, ID_PENCOLOUR_RED, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPenColSel, MF_UNCHECKED);
gCurrPenColSel    = ID_PENCOLOUR_RED;
gLogPen.lopnColor = BLACK;
return 0;

case ID_PENCOLOUR_GREEN:
CheckMenuItem(ghMainMenu, ID_PENCOLOUR_GREEN, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPenColSel, MF_UNCHECKED);
gCurrPenColSel    = ID_PENCOLOUR_GREEN;
gLogPen.lopnColor = GREEN;
return 0;

case ID_PENCOLOUR_BLUE:
CheckMenuItem(ghMainMenu, ID_PENCOLOUR_BLUE, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPenColSel, MF_UNCHECKED);
gCurrPenColSel    = ID_PENCOLOUR_BLUE;
gLogPen.lopnColor = BLUE;
return 0;

//=====================================
// Brush Colours
//=====================================
case ID_BRUSHCOLOUR_BLACK:
CheckMenuItem(ghMainMenu, ID_BRUSHCOLOUR_BLACK, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrBrushColSel, MF_UNCHECKED);
gCurrBrushColSel  = ID_BRUSHCOLOUR_BLACK;
gLogBrush.lbColor = BLACK;
return 0;

case ID_BRUSHCOLOUR_WHITE:
CheckMenuItem(ghMainMenu, ID_BRUSHCOLOUR_WHITE, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrBrushColSel, MF_UNCHECKED);
gCurrBrushColSel  = ID_BRUSHCOLOUR_WHITE;
gLogBrush.lbColor = WHITE;
return 0;

case ID_BRUSHCOLOUR_RED:
CheckMenuItem(ghMainMenu, ID_BRUSHCOLOUR_RED, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrBrushColSel, MF_UNCHECKED);
gCurrBrushColSel  = ID_BRUSHCOLOUR_RED;
gLogBrush.lbColor = RED;
return 0;

case ID_BRUSHCOLOUR_GREEN:
CheckMenuItem(ghMainMenu, ID_BRUSHCOLOUR_GREEN, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrBrushColSel, MF_UNCHECKED);
gCurrBrushColSel  = ID_BRUSHCOLOUR_GREEN;
gLogBrush.lbColor = GREEN;
return 0;

case ID_BRUSHCOLOUR_BLUE:
CheckMenuItem(ghMainMenu, ID_BRUSHCOLOUR_BLUE, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrBrushColSel, MF_UNCHECKED);
gCurrBrushColSel  = ID_BRUSHCOLOUR_BLUE;
gLogBrush.lbColor = BLUE;
return 0;

//=====================================
// Pen Styles
//=====================================
case ID_PENSTYLE_SOLID:
CheckMenuItem(ghMainMenu, ID_PENSTYLE_SOLID, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPenStyleSel, MF_UNCHECKED);
gCurrPenStyleSel  = ID_PENSTYLE_SOLID;
gLogPen.lopnStyle = PS_SOLID;
return 0;

case ID_PENSTYLE_DOTTED:
CheckMenuItem(ghMainMenu, ID_PENSTYLE_DOTTED, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPenStyleSel, MF_UNCHECKED);
gCurrPenStyleSel = ID_PENSTYLE_DOTTED;
gLogPen.lopnStyle = PS_DOT;
return 0;

case ID_PENSTYLE_DASHED:
CheckMenuItem(ghMainMenu, ID_PENSTYLE_DASHED, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrPenStyleSel, MF_UNCHECKED);
gCurrPenStyleSel  = ID_PENSTYLE_DASHED;
gLogPen.lopnStyle = PS_DASH;
return 0;

//=====================================
// Brush Styles
//=====================================
case ID_BRUSHSTYLE_SOLID:
CheckMenuItem(ghMainMenu, ID_BRUSHSTYLE_SOLID, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrBrushStyleSel, MF_UNCHECKED);
gCurrBrushStyleSel = ID_BRUSHSTYLE_SOLID;
gLogBrush.lbStyle  = BS_SOLID;
return 0;

case ID_BRUSHSTYLE_NULL:
CheckMenuItem(ghMainMenu, ID_BRUSHSTYLE_NULL, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrBrushStyleSel, MF_UNCHECKED);
gCurrBrushStyleSel = ID_BRUSHSTYLE_NULL;
gLogBrush.lbStyle  = BS_NULL;
return 0;

case ID_BRUSHSTYLE_DIAGONAL:
CheckMenuItem(ghMainMenu, ID_BRUSHSTYLE_DIAGONAL, MF_CHECKED);
CheckMenuItem(ghMainMenu, gCurrBrushStyleSel, MF_UNCHECKED);
gCurrBrushStyleSel = ID_BRUSHSTYLE_DIAGONAL;
gLogBrush.lbStyle  = BS_HATCHED;
gLogBrush.lbHatch  = HS_CROSS;
return 0;
}

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