Windows.h help with WM_PAINT

[ivory harbor]

language is c, im having trouble with the `WM_PAINT.
case WM_PAINT:
{
PAINTSTRUCT ps;

        HDC hdc = BeginPaint(hwnd, &ps);
        FillRect(hdc, &ps.rcPaint, (COLOR_WINDOW+1));

        RECT r1 = mr(0, 0, 1000, 1000);
        FillRect(hdc, &r1, (HBRUSH) RGB(255, 0, 0));
        EndPaint(hwnd, &ps);
    }

`
im trying to get it to draw a red rectangle but i dont see it.

`if (hwnd == NULL)
{
return 0;
}
ShowWindow(hwnd, nCmdShow);
MSG msg;
ZeroMemory(&msg, sizeof(MSG));
while (GetMessage(&msg, NULL, 0, 0) > 0)
{

    TranslateMessage(&msg);
    DispatchMessage(&msg);
}

}`
msg system^

the window shows, WM PAINT is called, but FILLRECT is where it seems to not do anything so i think i might of typed it out wrong?

either way idk what to do

[native plume]

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[ivory harbor]

Windows.h help with WM_PAINT

[native plume]

How to Format Code on Discord

Markup

```cpp
int main() {}
```

Result

int main() {}

Note: Back-tick (`) not quotes (')

[rain mural]

https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-invalidaterect

that might be what you are missing

or no, that might be reverse ;)

that may cause wm_paint to be called, long time since I played with win api

it doesn't seem you can use RGB as HBRUSH

i.e. that you would need to create brush first

(I'm looking into windows api docs live, so I may be talking bs)

but I would try to use CreateSolidBrush first in your app, saving the handle, and then using that hande for FillRect

[ivory harbor]

i do remember trying createsolidbrush

also what is invalidaterect

also would it be FillRect(hdc, &r1, createsolidbrush...); and how would i add the color to create solid brush?

[rain mural]

no, you would rather create brush once

outside of WM_PAINT

and then use it here

[ivory harbor]

interesting ill try that

thank you so much

[native plume]

@ivory harbor Has your question been resolved? If so, type !solved :)

[ivory harbor]

!solved