About waveinopen

[minihotto]

Appreciate for ur reply. But it's still same.

[Nishad S]

Try to cast like waveInOpen(&hWav,0, &wfx,(DWORD_PTR)WaveInCallback ,0, CALLBACK_FUNCTION);

- NS -

[minihotto]

It comes other errors.@@ 1.error C3374: can't take address of 'p2p::Form1::WaveInCallback' unless creating delegate instance 2.error C2440: 'type cast' : cannot convert from 'void (__clrcall p2p::Form1::* )(HWAVEIN,UINT,DWORD_PTR,DWORD_PTR,DWORD)' to 'DWORD_PTR'

[Nishad S]

Please show me the declaration of the callback function. Not in the cpp but inside the class in header file.

- NS -

[David Crow]

NS17 wrote:

Please show me the declaration of the callback function.

It's declared in mmsystem.h:

void CALLBACK waveInProc(
HWAVEIN hwi,
UINT uMsg,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
);

---

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

[minihotto]

public ref class Form1 : public System::Windows::Forms::Form { public: Form1(void) { InitializeComponent(); // //TODO: Add the constructor code here // } int call_id; void CALLBACK WaveInCallback(HWAVEIN hw, UINT uMsg,DWORD_PTR dwInstance, DWORD_PTR dwParam1, DWORD dwParam2) { WAVEHDR* curhdr = (WAVEHDR*)dwParam1; waveInAddBuffer(hw, curhdr, sizeof(WAVEHDR)); } ............ I put in the class form1

[jhwurmbach]

minihotto wrote:

public ref class Form1 : public System::Windows::Forms::Form

You very certainly wanted to ask that in the "Managed C++"-Forum?!? :^)

---

Let's think the unthinkable, let's do the undoable, let's prepare to grapple with the ineffable itself, and see if we may not eff it after all.
Douglas Adams, "Dirk Gently's Holistic Detective Agency"

[Hamid Taebi]

I agree ask on the correct forum.

[Nishad S]

I am not sure about this coding. :( In C++, it should be static declaration. Try to make it static function.

- NS -

[Nishad S]

:)

DavidCrow wrote:

It's declared in mmsystem.h:

I meant how he declared the the function to use as callback.

- NS -