I want to render an OpenGL frame within a form in C Builder, but I'm encountering issues when following provided OpenGL startup code. How can I resolve this?
Utilizing TForm::Handle as Window Handle
The solution lies in using TForm::Handle as the window handle.
Sample Implementation
Here's an example adapted from an older version of C Builder:
<code class="cpp">int TForm1::ogl_init() { if (ogl_inicialized) return 1; hdc = GetDC(Form1->Handle); // Get device context PIXELFORMATDESCRIPTOR pfd; // Set pixel format for the DC ... // Create current rendering context hrc = wglCreateContext(hdc); if (hrc == NULL) { ShowMessage("Could not initialize OpenGL Rendering context !!!"); ogl_inicialized = 0; return 0; } if (!wglMakeCurrent(hdc, hrc)) { wglDeleteContext(hrc); // Destroy rendering context ogl_inicialized = 0; return 0; } // ... ogl_inicialized = 1; return 1; }</code>
Additional Notes
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