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Add some error detection

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This commit is contained in:
Pierre Krieger 2014-08-07 18:05:18 +02:00
parent d3e3590b84
commit cbf07d3190
1 changed files with 7 additions and 1 deletions
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8
src/x11/mod.rs
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@ -144,7 +144,13 @@ impl Window {
// creating the dummy context // creating the dummy context
let dummy_context = let dummy_context =
ffi::glXCreateContext(display, &visual_infos, ptr::null(), 1); ffi::glXCreateContext(display, &visual_infos, ptr::null(), 1);
ffi::glXMakeCurrent(display, window, dummy_context); if dummy_context.is_null() {
return Err(format!("glXCreateContext failed"));
}
if ffi::glXMakeCurrent(display, window, dummy_context) == 0 {
return Err(format!("glXMakeCurrent with dummy context failed"));
}
// getting the pointer // getting the pointer
let fn_ptr = { let fn_ptr = {