Faulty #define in Resource.h

Question

Faulty #define in Resource.h

Bryan Kelly 516

Visual Studio 2022, Version 17.13.3, Windows 11, C++, MFC

This problem has been present for, maybe, since the project was first started. I am rather new with user interfaces and Visual Studio.

This project has, so far, 3 dialog classes with several buttons in each. In dialog C_Do_Arithmetic, a new button was added to test a function. After adding the handler, put a breakpoint in the handler, clicked the button, and the breakpoint is not hit. Making this short, part of Resource.h looks like this:

#define IDC_BTN_CLEAR_TEMP              1023
#define IDC_TEST_ADD                    1024
#define IDC_BTN_CLEAR_CARRY             1024  // duplicate
#define IDC_BUTTON1                     1025
#define IDC_BTN_CLEAR_A                 1025 // duplicate
#define IDC_BTN_TEST_MULTIPLY           1025  // duplicate
#define IDC_BTN_TEST_SUBTRACT           1026
#define IDC_BTN_CLEAR_RESULT            1026  // duplicate
#define IDC_BTN_CLEAR_ALL               1027

VS has a habit of duplicating these numbers. It does not put the new number at the end. In this case every item except IDC_BTN_TEST_MULTIPLY was present, then the one just mentioned was put in the place shown above. Why not the end?

Manually edit them and make them increment by one with no missed or duplicate numbers. No other changes. It works, breakpoint caught.

This has happened repeatedly. Have I done something wrong? Might this be a known problem? Or maybe something else?

Viorel 123.5K Reputation points

2025-07-29T23:49:06.4466667+00:00

Have you also noticed variable _APS_NEXT_CONTROL_VALUE and others that should contain reasonable values? (It should be probably 1028).
Bryan Kelly 516 Reputation points

2025-07-31T16:44:45.4766667+00:00

No, I did not know anything about that one. I am quite new to user interfaces with VS. Since you mentioned it, here is that section

// Next default values for new objects

//

#ifdef APSTUDIO_INVOKED

#ifndef APSTUDIO_READONLY_SYMBOLS

#define _APS_NEXT_RESOURCE_VALUE 132

#define _APS_NEXT_COMMAND_VALUE 32771

#define _APS_NEXT_CONTROL_VALUE 1027

#define _APS_NEXT_SYMED_VALUE 105

#endif

#endif

And the end of the define list is below

#define IDC_BTN_CLEAR_CARRY 1026

#define IDC_BUTTON1 1027

#define IDC_BTN_CLEAR_A 1028

#define IDC_BTN_TEST_MULTIPLY 1029

#define IDC_BTN_TEST_SUBTRACT 1030

#define IDC_BTN_CLEAR_RESULT 1031

#define IDC_BTN_CLEAR_ALL 1032

So its value is not correct. I need to add some buttons so will save my project, changes that value to 1033, and see what happens.

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Viorel 123.5K Reputation points

2025-07-29T23:49:06.4466667+00:00

Have you also noticed variable _APS_NEXT_CONTROL_VALUE and others that should contain reasonable values? (It should be probably 1028).
Bryan Kelly 516 Reputation points

2025-07-31T16:44:45.4766667+00:00

No, I did not know anything about that one. I am quite new to user interfaces with VS. Since you mentioned it, here is that section

// Next default values for new objects

//

#ifdef APSTUDIO_INVOKED

#ifndef APSTUDIO_READONLY_SYMBOLS

#define _APS_NEXT_RESOURCE_VALUE 132

#define _APS_NEXT_COMMAND_VALUE 32771

#define _APS_NEXT_CONTROL_VALUE 1027

#define _APS_NEXT_SYMED_VALUE 105

#endif

#endif

And the end of the define list is below

#define IDC_BTN_CLEAR_CARRY 1026

#define IDC_BUTTON1 1027

#define IDC_BTN_CLEAR_A 1028

#define IDC_BTN_TEST_MULTIPLY 1029

#define IDC_BTN_TEST_SUBTRACT 1030

#define IDC_BTN_CLEAR_RESULT 1031

#define IDC_BTN_CLEAR_ALL 1032

So its value is not correct. I need to add some buttons so will save my project, changes that value to 1033, and see what happens.

Answer 1

Tested (see previous post in comments section) and there appears to be a problem. Added one button. Here is the bottom section of the #define list.

#define IDC_BTN_CLEAR_CARRY 1027

#define IDC_BUTTON1 1028

#define IDC_BTN_TEST 1028 // New item added here

#define IDC_BTN_CLEAR_A 1029

#define IDC_BTN_TEST_MULTIPLY 1030

#define IDC_BTN_TEST_SUBTRACT 1031

#define IDC_BTN_CLEAR_RESULT 1032

#define IDC_BTN_CLEAR_ALL 1033

The new button is IDC_BTN_TEST

the mentioned item is

#define _APS_NEXT_CONTROL_VALUE 1034

So Visual Studio inserted the new item at location 1028 but should have added a new 1034 item.

From what I see, I will check Resource.h after adding each new control and make the appropriate edits.

This appears to be a problem in Visual Studio.

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Faulty #define in Resource.h

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