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December 2nd, 2017, 07:30 PM
#1
How to assign function to keyboard function key in Visual Basic
Hi,
I'm trying to create a program in Visual Basic to assign a function key to print a screenshot of the current screen and another one to print a list of the files in the currently selected folder in File Explorer.
The key assignments need to remain active even after the program that assigns the keys has been closed.
Does anyone know how to do this?
Debbie
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December 5th, 2017, 04:12 AM
#2
Re: How to assign function to keyboard function key in Visual Basic
Have a look at the RegsiterHotKeyEx Windows API function
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December 5th, 2017, 09:11 PM
#3
Re: How to assign function to keyboard function key in Visual Basic
Hi HanneSThEGreaT,
Thanks for the pointer. I've tried looking for RegisterHotKeyEx in Visual Studio, but I can only find RegisterHotKey. Is that the one you meant?
Also, I've discovered this page listing the Virtual Key Codes (https://msdn.microsoft.com/en-us/lib...v=vs.85).aspx), but when I try to use VK_F1, for instance, VS keeps saying it is not declared.
Is there something need to import to get them declared?
Debbie
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December 6th, 2017, 03:39 AM
#4
Re: How to assign function to keyboard function key in Visual Basic
when I try to use VK_F1, for instance, VS keeps saying it is not declared.
VK_F! is defined in winuser.h as a series of defines. To use these in VB you'll need to either use them as their numeric value or use equivalence assignments.
Code:
#define VK_F1 0x70
#define VK_F2 0x71
#define VK_F3 0x72
#define VK_F4 0x73
#define VK_F5 0x74
#define VK_F6 0x75
#define VK_F7 0x76
#define VK_F8 0x77
#define VK_F9 0x78
#define VK_F10 0x79
#define VK_F11 0x7A
#define VK_F12 0x7B
#define VK_F13 0x7C
#define VK_F14 0x7D
#define VK_F15 0x7E
#define VK_F16 0x7F
#define VK_F17 0x80
#define VK_F18 0x81
#define VK_F19 0x82
#define VK_F20 0x83
#define VK_F21 0x84
#define VK_F22 0x85
#define VK_F23 0x86
#define VK_F24 0x87
All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!
C++23 Compiler: Microsoft VS2022 (17.6.5)
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December 6th, 2017, 04:07 AM
#5
Re: How to assign function to keyboard function key in Visual Basic
Hi 2kaud,
Thanks for the reference, but how do I include winuser.h into my project, so I can use the constants.
Also, could you explain what you mean by equivalence assignments, as I haven't heard that phrase before? Do you mean assiging the values to my own variables?
Debbie
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December 6th, 2017, 04:42 AM
#6
Re: How to assign function to keyboard function key in Visual Basic
but how do I include winuser.h into my project, so I can use the constants.
I believe you have to define the variables yourself in the program - but I'm a c++ programmer, not a VB programmer so can't really help further.
All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!
C++23 Compiler: Microsoft VS2022 (17.6.5)
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