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Niakr1s/cmake_windows_icon.txt

Created November 23, 2019 19:55
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How to add icon to cmake app in windows
Raw
cmake_windows_icon.txt
1. Put app.ico in directory.
2. Create app.rc in same directory with one line:
IDI_ICON1 ICON DISCARDABLE "app.ico"
3. Run command (Warning: it's app.o, not app.res, how it is mentioned in other manuals!)
windres app.rc -o app.o
4. add_executable(app
...
app.o
)
5. Proofit!
@xiaoweiChen
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Generate the object file is not a good way for cross platform, this can add the icon on Windows by my test.

@vinnyhorgan
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Hi! I was using this method but actually discovered you can simply add the ".rc" file to the sources and it should just work...

@Niyachelowick
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how do i use the icon with multiple windows?

@Igwanya
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Igwanya commented Jul 27, 2024

This post is incorrect. The Doc identify option /fo resname for anyone using cmake here is a snippet that generates the .RES script form RC compilation. Also make sure the resource.h file include windows.h header file .

adds a custom build step to a file. Generates the resources

add_custom_command(
TARGET LibTransactX
PRE_BUILD
DEPENDS RC
COMMAND RC /v /r ${CMAKE_SOURCE_DIR}/res/app.rc
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/res"
COMMENT "Build step to produce the icon file"
)

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