Re: How load icon from resource using LoadImage?

[ShadoLight via Digitalmars-d-learn]

On Sunday, 5 January 2020 at 13:52:27 UTC, JN wrote:

On Sunday, 5 January 2020 at 13:33:35 UTC, Marcone wrote:


[snip]


By the way, have you managed to add the res file into the 
binary? My understanding is that the res file should be added 
into the exe file by the rc command before it can be used.


Sort of correct... but not strictly correct. Typically the 
resource compiler (such as Microsoft's rc.exe) compiles 
xyzfile.rc into xyzfile.res.


xyzfile.res is then added into the exe by the linker during 
linking.

Re: How load icon from resource using LoadImage?

[Marcone via Digitalmars-d-learn]

On Sunday, 5 January 2020 at 15:13:17 UTC, Rumbu wrote:

On Sunday, 5 January 2020 at 13:33:35 UTC, Marcone wrote:
I am using this code to load icon from local directory, but I 
want to load icon from resource.res file:


wndclass.hIcon  = LoadImage( NULL, "icon.ico", IMAGE_ICON, 0, 
0, LR_LOADFROMFILE| LR_SHARED | LR_LOADTRANSPARENT);


You cannot load icons from res files.

If you link your res file to the executable, you can load the 
icon using:


LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(youriconid));


The function LoadImage from above loads an icon from the file 
named icon.ico, not from a res file.


Very good! working using: LoadIcon(hInstance, 
MAKEINTRESOURCE(youriconid)); becouse GetModuleHandle(NULL) is 
undefined here.

Re: How load icon from resource using LoadImage?

[Rumbu via Digitalmars-d-learn]

On Sunday, 5 January 2020 at 13:33:35 UTC, Marcone wrote:
I am using this code to load icon from local directory, but I 
want to load icon from resource.res file:


wndclass.hIcon  = LoadImage( NULL, "icon.ico", IMAGE_ICON, 0, 
0, LR_LOADFROMFILE| LR_SHARED | LR_LOADTRANSPARENT);


You cannot load icons from res files.

If you link your res file to the executable, you can load the 
icon using:


LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(youriconid));


The function LoadImage from above loads an icon from the file 
named icon.ico, not from a res file.

Re: How load icon from resource using LoadImage?

[JN via Digitalmars-d-learn]

On Sunday, 5 January 2020 at 13:33:35 UTC, Marcone wrote:
I am using this code to load icon from local directory, but I 
want to load icon from resource.res file:


wndclass.hIcon  = LoadImage( NULL, "icon.ico", IMAGE_ICON, 0, 
0, LR_LOADFROMFILE| LR_SHARED | LR_LOADTRANSPARENT);


https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-loadimagea

According to the docs, the first argument is NULL only for 
standalone images, otherwise you have to provide a valid 
HINSTANCE.


By the way, have you managed to add the res file into the binary? 
My understanding is that the res file should be added into the 
exe file by the rc command before it can be used.

How load icon from resource using LoadImage?

[Marcone via Digitalmars-d-learn]

I am using this code to load icon from local directory, but I 
want to load icon from resource.res file:


wndclass.hIcon  = LoadImage( NULL, "icon.ico", IMAGE_ICON, 0, 0, 
LR_LOADFROMFILE| LR_SHARED | LR_LOADTRANSPARENT);